8.9
HIGH
CVSS 4.0
CVE-2026-21441
urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)
Overview
Description
urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to drain the connection and decompress the content unnecessarily. This decompression occurred even before any read methods were called, and configured read limits did not restrict the amount of decompressed data. As a result, there was no safeguard against decompression bombs. A malicious server could exploit this to trigger excessive resource consumption on the client. Applications and libraries are affected when they stream content from untrusted sources by setting `preload_content=False` when they do not disable redirects. Users should upgrade to at least urllib3 v2.6.3, in which the library does not decode content of redirect responses when `preload_content=False`. If upgrading is not immediately possible, disable redirects by setting `redirect=False` for requests to untrusted source.
Details
INFO
Published Date :
Jan. 7, 2026, 10:15 p.m.
Last Modified :
July 3, 2026, 1:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
Upgrade urllib3 to v2.6.3 or disable redirects for untrusted sources.
- Upgrade to urllib3 version 2.6.3 or later.
- Disable redirects if upgrading is not possible.
- Avoid streaming content from untrusted sources.
Public PoC/Exploit Available at Github
CVE-2026-21441 has a 23 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-21441.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-21441 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-21441
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
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Updated: 4 months, 2 weeks ago
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0 fork
0 watcher
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This repo has been linked 16 different CVEs too.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-21441 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-21441 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux:7::server'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux Server HighAvailability (v. 7 ELS)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7::server'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux Server ResilientStorage (v. 7 ELS)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openstack:17.1', 'cpe:/a:redhat:openstack:17.1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 17.1', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhui:4::el8'], 'vendor': 'Red Hat', 'product': 'RHUI 4 for RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6.16::el8', 'cpe:/a:redhat:satellite_capsule:6.16::el8', 'cpe:/a:redhat:satellite_utils:6.16::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6.16 for RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6.16::el9', 'cpe:/a:redhat:satellite_capsule:6.16::el9', 'cpe:/a:redhat:satellite_utils:6.16::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6.16 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6.17::el9', 'cpe:/a:redhat:satellite_capsule:6.17::el9', 'cpe:/a:redhat:satellite_utils:6.17::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6.17 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6.18::el9', 'cpe:/a:redhat:satellite_capsule:6.18::el9', 'cpe:/a:redhat:satellite_maintenance:6.18::el9', 'cpe:/a:redhat:satellite_utils:6.18::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6.18 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.0::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.9.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.2::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.9.2)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus:9.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS (v.9.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus:9.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS (v.9.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux_eus:10.0'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS EUS (v. 10.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.1'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_aus:8.2::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS AUS (v. 8.2)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_aus:8.4::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS AUS (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_eus_long_life:8.4::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_aus:8.6::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS AUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_e4s:8.6::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS E4S (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_tus:8.6::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS TUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_e4s:8.8::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_tus:8.8::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_e4s:9.0::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS E4S (v.9.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_e4s:9.2::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS E4S (v.9.2)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_eus:9.4::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS EUS (v.9.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:rhel_eus:9.6::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS EUS (v.9.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9::baseos'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux BaseOS (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux HighAvailability (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.4::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability AUS (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.4::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux HighAvailability EUS EXTENSION (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.6::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability E4S (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.6::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability TUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.0::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability E4S (v.9.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.2::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability E4S (v.9.2)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus:9.4::highavailability'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux High Availability EUS (v.9.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:multicluster_globalhub:1.4::el9'], 'vendor': 'Red Hat', 'product': 'Multicluster Global Hub 1.4.5', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:multicluster_globalhub:1.5::el9'], 'vendor': 'Red Hat', 'product': 'Multicluster Global Hub 1.5.4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:network_observ_optr:1.11::el9'], 'vendor': 'Red Hat', 'product': 'Network Observability (NETOBSERV) 1.11.2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_api_data_protection:1.3::el9'], 'vendor': 'Red Hat', 'product': 'OpenShift API for Data Protection 1.3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ai_inference_server:3.2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat AI Inference Server 3.2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2.14::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2.14', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2.15::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2.15', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:advanced_cluster_security:4.8::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Security for Kubernetes 4.8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:advanced_cluster_security:4.9::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Security for Kubernetes 4.9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.4::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.5::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:7.1::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 7.1', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:8::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:9::el10'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:discovery:2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Discovery 2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_ai:2.25::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI 2.25', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_ai:3.3::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI 3.3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_devspaces:3.26::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces (RHOSDS) 3.26', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1.17::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps 1.17', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1.18::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps 1.18', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1.19::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps 1.19', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.12::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.12', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.13::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.13', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.14::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.14', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.15::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.15', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.16::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.16', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.10::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.1', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6.18::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6.18', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.3::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhui:5::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Update Infrastructure 5', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::resilientstorage'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux ResilientStorage (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.0::resilientstorage'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux ResilientStorage E4S (v.9.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:9.2::resilientstorage'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux Resilient Storage E4S (v.9.2)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus:9.4::resilientstorage'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:zero_trust_workload_identity_manager:1.0::el9'], 'vendor': 'Red Hat', 'product': 'Zero Trust Workload Identity Manager 1', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:cert_manager:1.18::el9'], 'vendor': 'Red Hat', 'product': 'cert-manager operator for Red Hat OpenShift 1.18', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:mirror_registry:2.0::el8'], 'vendor': 'Red Hat', 'product': 'mirror registry for Red Hat OpenShift 2.0', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:external_secrets_operator:1'], 'vendor': 'Red Hat', 'product': 'External Secrets Operator for Red Hat OpenShift', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:logging:5'], 'vendor': 'Red Hat', 'product': 'Logging Subsystem for Red Hat OpenShift', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhmt:1'], 'vendor': 'Red Hat', 'product': 'Migration Toolkit for Containers', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:migration_toolkit_virtualization:2'], 'vendor': 'Red Hat', 'product': 'Migration Toolkit for Virtualization', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:multiarch_tuning_operator'], 'vendor': 'Red Hat', 'product': 'Multiarch Tuning Operator', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:multicluster_engine'], 'vendor': 'Red Hat', 'product': 'Multicluster Engine for Kubernetes', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ocp_tools'], 'vendor': 'Red Hat', 'product': 'OpenShift Developer Tools and Services', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_lightspeed'], 'vendor': 'Red Hat', 'product': 'OpenShift Lightspeed', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_pipelines:1'], 'vendor': 'Red Hat', 'product': 'OpenShift Pipelines', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:serverless:1'], 'vendor': 'Red Hat', 'product': 'OpenShift Serverless', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ai_inference_server:3'], 'vendor': 'Red Hat', 'product': 'Red Hat AI Inference Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_core:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform Ansible Core 2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quarkus:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Quarkus Native builder', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:certifications:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Certification Program for Red Hat Enterprise Linux 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:connectivity_link:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Connectivity Link 1', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhdh:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Developer Hub', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:edge_manager:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Edge Manager preview', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux_ai:3'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AI (RHEL AI) 3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:offline_knowledge_portal:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Offline Knowledge Portal', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_ai'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI (RHOAI)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift:4'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Container Platform 4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_data_foundation:4'], 'vendor': 'Red Hat', 'product': 'Red Hat Openshift Data Foundation 4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_devspaces:3'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:satellite:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:zero_trust_workload_identity_manager:0'], 'vendor': 'Red Hat', 'product': 'Zero Trust Workload Identity Manager - Tech Preview', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:assisted_installer:2'], 'vendor': 'Red Hat', 'product': 'Assisted Installer for Red Hat OpenShift Container Platform 2', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:confidential_compute_attestation:1'], 'vendor': 'Red Hat', 'product': 'Confidential Compute Attestation', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:dynamic_accelerator_slicer:1'], 'vendor': 'Red Hat', 'product': 'Dynamic Accelerator Slicer Operator for Red Hat OpenShift', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:external_secrets_operator:0'], 'vendor': 'Red Hat', 'product': 'external secrets operator for Red Hat OpenShift - Tech Preview', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:workload_availability_far:0'], 'vendor': 'Red Hat', 'product': 'Fence Agents Remediation Operator', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:workload_availability_nhc:0'], 'vendor': 'Red Hat', 'product': 'Node HealthCheck Operator', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift_api_data_protection:1'], 'vendor': 'Red Hat', 'product': 'OpenShift API for Data Protection', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:service_mesh:2'], 'vendor': 'Red Hat', 'product': 'OpenShift Service Mesh 2', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:service_mesh:3'], 'vendor': 'Red Hat', 'product': 'OpenShift Service Mesh 3', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:acm:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift_update_service:5'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Update Service', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:13'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 13 (Queens)', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:16.2'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 16.2', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:18.0'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 18.0', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:quay:3'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:workload_availability_snr:0'], 'vendor': 'Red Hat', 'product': 'Self Node Remediation Operator', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:stf:1.5'], 'vendor': 'Red Hat', 'product': 'Service Telemetry Framework 1.5', 'defaultStatus': 'unaffected'}] Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-409 Added Reference https://access.redhat.com/errata/RHSA-2026:0981 Added Reference https://access.redhat.com/errata/RHSA-2026:0990 Added Reference https://access.redhat.com/errata/RHSA-2026:10184 Added Reference https://access.redhat.com/errata/RHSA-2026:1038 Added Reference https://access.redhat.com/errata/RHSA-2026:1041 Added Reference https://access.redhat.com/errata/RHSA-2026:1042 Added Reference https://access.redhat.com/errata/RHSA-2026:1086 Added Reference https://access.redhat.com/errata/RHSA-2026:1087 Added Reference https://access.redhat.com/errata/RHSA-2026:1088 Added Reference https://access.redhat.com/errata/RHSA-2026:1089 Added Reference https://access.redhat.com/errata/RHSA-2026:1166 Added Reference https://access.redhat.com/errata/RHSA-2026:1168 Added Reference https://access.redhat.com/errata/RHSA-2026:1176 Added Reference https://access.redhat.com/errata/RHSA-2026:1224 Added Reference https://access.redhat.com/errata/RHSA-2026:1226 Added Reference https://access.redhat.com/errata/RHSA-2026:1239 Added Reference https://access.redhat.com/errata/RHSA-2026:1240 Added Reference https://access.redhat.com/errata/RHSA-2026:1241 Added Reference https://access.redhat.com/errata/RHSA-2026:1254 Added Reference https://access.redhat.com/errata/RHSA-2026:1485 Added Reference https://access.redhat.com/errata/RHSA-2026:14877 Added Reference https://access.redhat.com/errata/RHSA-2026:1504 Added Reference https://access.redhat.com/errata/RHSA-2026:1546 Added Reference https://access.redhat.com/errata/RHSA-2026:1596 Added Reference https://access.redhat.com/errata/RHSA-2026:1599 Added Reference https://access.redhat.com/errata/RHSA-2026:1609 Added Reference https://access.redhat.com/errata/RHSA-2026:1618 Added Reference https://access.redhat.com/errata/RHSA-2026:1619 Added Reference https://access.redhat.com/errata/RHSA-2026:1652 Added Reference https://access.redhat.com/errata/RHSA-2026:1674 Added Reference https://access.redhat.com/errata/RHSA-2026:1676 Added Reference https://access.redhat.com/errata/RHSA-2026:1693 Added Reference https://access.redhat.com/errata/RHSA-2026:1704 Added Reference https://access.redhat.com/errata/RHSA-2026:1706 Added Reference https://access.redhat.com/errata/RHSA-2026:1712 Added Reference https://access.redhat.com/errata/RHSA-2026:1717 Added Reference https://access.redhat.com/errata/RHSA-2026:1726 Added Reference https://access.redhat.com/errata/RHSA-2026:1729 Added Reference https://access.redhat.com/errata/RHSA-2026:1730 Added Reference https://access.redhat.com/errata/RHSA-2026:1734 Added Reference https://access.redhat.com/errata/RHSA-2026:1735 Added Reference https://access.redhat.com/errata/RHSA-2026:1736 Added Reference https://access.redhat.com/errata/RHSA-2026:17456 Added Reference https://access.redhat.com/errata/RHSA-2026:17457 Added Reference https://access.redhat.com/errata/RHSA-2026:17460 Added Reference https://access.redhat.com/errata/RHSA-2026:17461 Added Reference https://access.redhat.com/errata/RHSA-2026:17462 Added Reference https://access.redhat.com/errata/RHSA-2026:17463 Added Reference https://access.redhat.com/errata/RHSA-2026:1791 Added Reference https://access.redhat.com/errata/RHSA-2026:1792 Added Reference https://access.redhat.com/errata/RHSA-2026:1793 Added Reference https://access.redhat.com/errata/RHSA-2026:1794 Added Reference https://access.redhat.com/errata/RHSA-2026:1803 Added Reference https://access.redhat.com/errata/RHSA-2026:1805 Added Reference https://access.redhat.com/errata/RHSA-2026:1942 Added Reference https://access.redhat.com/errata/RHSA-2026:1957 Added Reference https://access.redhat.com/errata/RHSA-2026:19712 Added Reference https://access.redhat.com/errata/RHSA-2026:2106 Added Reference https://access.redhat.com/errata/RHSA-2026:2126 Added Reference https://access.redhat.com/errata/RHSA-2026:2137 Added Reference https://access.redhat.com/errata/RHSA-2026:2139 Added Reference https://access.redhat.com/errata/RHSA-2026:2144 Added Reference https://access.redhat.com/errata/RHSA-2026:2256 Added Reference https://access.redhat.com/errata/RHSA-2026:2456 Added Reference https://access.redhat.com/errata/RHSA-2026:2500 Added Reference https://access.redhat.com/errata/RHSA-2026:25127 Added Reference https://access.redhat.com/errata/RHSA-2026:2563 Added Reference https://access.redhat.com/errata/RHSA-2026:2681 Added Reference https://access.redhat.com/errata/RHSA-2026:2695 Added Reference https://access.redhat.com/errata/RHSA-2026:2717 Added Reference https://access.redhat.com/errata/RHSA-2026:2718 Added Reference https://access.redhat.com/errata/RHSA-2026:2723 Added Reference https://access.redhat.com/errata/RHSA-2026:2728 Added Reference https://access.redhat.com/errata/RHSA-2026:2760 Added Reference https://access.redhat.com/errata/RHSA-2026:2762 Added Reference https://access.redhat.com/errata/RHSA-2026:2764 Added Reference https://access.redhat.com/errata/RHSA-2026:2765 Added Reference https://access.redhat.com/errata/RHSA-2026:28043 Added Reference https://access.redhat.com/errata/RHSA-2026:28441 Added Reference https://access.redhat.com/errata/RHSA-2026:2900 Added Reference https://access.redhat.com/errata/RHSA-2026:2911 Added Reference https://access.redhat.com/errata/RHSA-2026:2919 Added Reference https://access.redhat.com/errata/RHSA-2026:2924 Added Reference https://access.redhat.com/errata/RHSA-2026:2925 Added Reference https://access.redhat.com/errata/RHSA-2026:2926 Added Reference https://access.redhat.com/errata/RHSA-2026:3296 Added Reference https://access.redhat.com/errata/RHSA-2026:33154 Added Reference https://access.redhat.com/errata/RHSA-2026:3406 Added Reference https://access.redhat.com/errata/RHSA-2026:3444 Added Reference https://access.redhat.com/errata/RHSA-2026:3461 Added Reference https://access.redhat.com/errata/RHSA-2026:3462 Added Reference https://access.redhat.com/errata/RHSA-2026:3713 Added Reference https://access.redhat.com/errata/RHSA-2026:3782 Added Reference https://access.redhat.com/errata/RHSA-2026:3869 Added Reference https://access.redhat.com/errata/RHSA-2026:3874 Added Reference https://access.redhat.com/errata/RHSA-2026:3884 Added Reference https://access.redhat.com/errata/RHSA-2026:3960 Added Reference https://access.redhat.com/errata/RHSA-2026:4185 Added Reference https://access.redhat.com/errata/RHSA-2026:4215 Added Reference https://access.redhat.com/errata/RHSA-2026:4271 Added Reference https://access.redhat.com/errata/RHSA-2026:4466 Added Reference https://access.redhat.com/errata/RHSA-2026:4467 Added Reference https://access.redhat.com/errata/RHSA-2026:5459 Added Reference https://access.redhat.com/errata/RHSA-2026:6287 Added Reference https://access.redhat.com/errata/RHSA-2026:6292 Added Reference https://access.redhat.com/errata/RHSA-2026:8151 Added Reference https://access.redhat.com/errata/RHSA-2026:8500 Added Reference https://access.redhat.com/errata/RHSA-2026:8501 Added Reference https://access.redhat.com/security/cve/CVE-2026-21441 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2427726 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21441.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'urllib3', 'product': 'urllib3', 'versions': [{'status': 'affected', 'version': '>= 1.22, < 2.6.3'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-21441', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-01-08T20:08:04.959214Z'} -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jan. 23, 2026
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2026/01/msg00017.html -
Initial Analysis by [email protected]
Jan. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:* versions from (including) 1.22 up to (excluding) 2.6.3 Added Reference Type GitHub, Inc.: https://github.com/urllib3/urllib3/commit/8864ac407bba8607950025e0979c4c69bc7abc7b Types: Patch Added Reference Type GitHub, Inc.: https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99 Types: Vendor Advisory -
New CVE Received by [email protected]
Jan. 07, 2026
Action Type Old Value New Value Added Description urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to drain the connection and decompress the content unnecessarily. This decompression occurred even before any read methods were called, and configured read limits did not restrict the amount of decompressed data. As a result, there was no safeguard against decompression bombs. A malicious server could exploit this to trigger excessive resource consumption on the client. Applications and libraries are affected when they stream content from untrusted sources by setting `preload_content=False` when they do not disable redirects. Users should upgrade to at least urllib3 v2.6.3, in which the library does not decode content of redirect responses when `preload_content=False`. If upgrading is not immediately possible, disable redirects by setting `redirect=False` for requests to untrusted source. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-409 Added Reference https://github.com/urllib3/urllib3/commit/8864ac407bba8607950025e0979c4c69bc7abc7b Added Reference https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.