Vulnerability · Published Jul 7, 2026 · Assigned by suse
CVE-2026-44938Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent
High 8.8
In plain English
A high-severity security flaw in Rancher from SUSE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/rancher/fleet | 0.15.2 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | 0.14.6 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | 0.13.11 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | 0.12.15 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | 0.12.15, 0.13.11, 0.14.6, 0.15.2 | GO-2026-5871 |
Affected products (as reported)
Weakness: CWE-522 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H