CVE-2026-44938 HIGH

CVE-2026-44938: Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent

Vendor Suse
Product Rancher
Weakness CWE-522 · Insufficiently protected credentials
Published July 7, 2026
Last update July 7, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 7, 2026 CVE published