CVE-2026-44938
Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent
Description
A vulnerability has been identified in Fleet's agent-side deployer, which did not filter security-sensitive keys from namespaceLabels in fleet.yaml (or BundleDeployment.spec.options.namespaceLabels) when applying them to the target namespace. An attacker with git push access to a Fleet-monitored repository could overwrite Pod Security Standards (PSS) enforcement labels on a target namespace. This allows the attacker to weaken admission controls and deploy workloads that PSS policies would otherwise block.
INFO
Published Date :
July 7, 2026, 2:16 p.m.
Last Modified :
July 7, 2026, 3:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 404e59f5-483d-4b8a-8e7a-e67604dd8afb | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Fleet agent-side deployer to filter sensitive keys.
- Ensure namespaceLabels do not overwrite PSS enforcement labels.
- Apply security patches for Fleet agent.
- Validate namespace label filtering.
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-2026-44938.
| URL | Resource |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44938 | |
| https://github.com/advisories/GHSA-864g-863m-vcvq |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44938 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-2026-44938
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44938 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44938 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 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 07, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-44938', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-07T14:07:36.547547Z'} -
New CVE Received by [email protected]
Jul. 07, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SUSE', 'product': 'Rancher', 'versions': [{'status': 'affected', 'version': '0.15.0', 'lessThan': '0.15.2', 'versionType': 'semver'}, {'status': 'affected', 'version': '0.14.0', 'lessThan': '0.14.6', 'versionType': 'semver'}, {'status': 'affected', 'version': '0.13.0', 'lessThan': '0.13.11', 'versionType': 'semver'}, {'status': 'affected', 'version': '0.12.0', 'lessThan': '0.12.15', 'versionType': 'semver'}], 'packageName': 'github.com/rancher/fleet', 'defaultStatus': 'unaffected'}] Added Description A vulnerability has been identified in Fleet's agent-side deployer, which did not filter security-sensitive keys from namespaceLabels in fleet.yaml (or BundleDeployment.spec.options.namespaceLabels) when applying them to the target namespace. An attacker with git push access to a Fleet-monitored repository could overwrite Pod Security Standards (PSS) enforcement labels on a target namespace. This allows the attacker to weaken admission controls and deploy workloads that PSS policies would otherwise block. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-522 Added Reference https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44938 Added Reference https://github.com/advisories/GHSA-864g-863m-vcvq