9.8
CRITICAL
CVSS 3.1
CVE-2026-27459
pyOpenSSL DTLS cookie callback buffer overflow
Overview
Description
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.
Details
INFO
Published Date :
March 18, 2026, 12:16 a.m.
Last Modified :
July 1, 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 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
Update pyOpenSSL to version 26.0.0 or later to fix buffer overflow.
- Update pyOpenSSL to version 26.0.0 or later.
- Ensure cookie values do not exceed 256 bytes.
Public PoC/Exploit Available at Github
CVE-2026-27459 has a 2 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-2026-27459.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27459 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-2026-27459
weaknesses.
CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call
CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities
CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables
CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow
CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow
CAPEC-42: MIME Conversion MIME Conversion
CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File
CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links
CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags
CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion
CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog()
CAPEC-92: Forced Integer Overflow Forced Integer Overflow
CAPEC-100: Overflow Buffers Overflow Buffers
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).
All Public RunWhen Helm Charts - Managed by terraform
Shell Dockerfile Go Template
Updated: 1 week, 4 days ago
1 stars
1 fork
1 watcher
Born at : Sept. 18, 2023, 10:09 a.m.
This repo has been linked 111 different CVEs too.
HTTPS client implementation for httplib and urllib2 based on PyOpenSSL
Python Shell Dockerfile
Updated: 3 months, 1 week ago
19 stars
20 fork
20 watcher
Born at : Sept. 2, 2013, 12:53 p.m.
This repo has been linked 2 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-2026-27459 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27459 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
Jul. 01, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 8', '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:ansible_automation_platform:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 9', '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: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:hummingbird:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Hardened Images', '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:3.14::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:3.17::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.17', '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:quay:3.9::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.4', '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:openshift_ai'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI (RHOAI)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el10', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 10', '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:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift:4'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Container Platform 4', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:17.1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 17.1', '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:satellite:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 8', '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:ansible_automation_platform:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 9', '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: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:hummingbird:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Hardened Images', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.10::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.10', '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:3.14::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:3.17::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.17', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:quay:3.9::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.4', '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:openshift_ai'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI (RHOAI)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el10', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 10', '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:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift:4'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Container Platform 4', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:17.1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 17.1', '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:satellite:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6', 'defaultStatus': 'unaffected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 8', '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:ansible_automation_platform:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.5 for RHEL 9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9', 'cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 9', '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: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:hummingbird:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Hardened Images', '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:3.14::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:3.17::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.17', '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:quay:3.9::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat Quay 3.9', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.4', '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:openshift_ai'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift AI (RHOAI)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ansible_automation_platform:2.6::el10', 'cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10'], 'vendor': 'Red Hat', 'product': 'Red Hat Ansible Automation Platform 2.6 for RHEL 10', '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:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift:4'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Container Platform 4', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openstack:17.1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenStack Platform 17.1', '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:satellite:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Satellite 6', 'defaultStatus': 'unaffected'}] Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-120 Added Reference https://access.redhat.com/errata/RHSA-2026:10754 Added Reference https://access.redhat.com/errata/RHSA-2026:11856 Added Reference https://access.redhat.com/errata/RHSA-2026:11916 Added Reference https://access.redhat.com/errata/RHSA-2026:11996 Added Reference https://access.redhat.com/errata/RHSA-2026:13508 Added Reference https://access.redhat.com/errata/RHSA-2026:13512 Added Reference https://access.redhat.com/errata/RHSA-2026:13545 Added Reference https://access.redhat.com/errata/RHSA-2026:13553 Added Reference https://access.redhat.com/errata/RHSA-2026:14835 Added Reference https://access.redhat.com/errata/RHSA-2026:14873 Added Reference https://access.redhat.com/errata/RHSA-2026:14874 Added Reference https://access.redhat.com/errata/RHSA-2026:19375 Added Reference https://access.redhat.com/errata/RHSA-2026:21017 Added Reference https://access.redhat.com/errata/RHSA-2026:22465 Added Reference https://access.redhat.com/errata/RHSA-2026:24853 Added Reference https://access.redhat.com/errata/RHSA-2026:7224 Added Reference https://access.redhat.com/errata/RHSA-2026:8437 Added Reference https://access.redhat.com/security/cve/CVE-2026-27459 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2448503 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27459.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'pyca', 'product': 'pyopenssl', 'versions': [{'status': 'affected', 'version': '>= 22.0.0, < 26.0.0'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-27459', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-03-18T19:52:08.536876Z'} -
Reanalysis by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:pyopenssl:pyopenssl:*:*:*:*:*:*:*:* versions from (including) 22.0.0 up to (including) 26.0.0 OR *cpe:2.3:a:pyopenssl:pyopenssl:*:*:*:*:*:*:*:* versions from (including) 22.0.0 up to (excluding) 26.0.0 -
Initial Analysis by [email protected]
Mar. 23, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:pyopenssl:pyopenssl:*:*:*:*:*:*:*:* versions from (including) 22.0.0 up to (including) 26.0.0 Added Reference Type GitHub, Inc.: https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4 Types: Vendor Advisory -
New CVE Received by [email protected]
Mar. 18, 2026
Action Type Old Value New Value Added Description pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected. Added CVSS V4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/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-120 Added Reference https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst Added Reference https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408 Added Reference https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4
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.