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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SUSE | Rancher | 0.15.0 – < 0.15.2, 0.14.0 – < 0.14.6, 0.13.0 – < 0.13.11, 0.12.0 – < 0.12.15 | 0.15.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/rancher/fleet | >= 0.15.0, < 0.15.2 | 0.15.2 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | >= 0.14.0, < 0.14.6 | 0.14.6 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | >= 0.13.0, < 0.13.11 | 0.13.11 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | >= 0.12.0, < 0.12.15 | 0.12.15 | GHSA-864g-863m-vcvq |
| Go | github.com/rancher/fleet | >= 0.12.0, < 0.12.15 · >= 0.13.0, < 0.13.11 · >= 0.14.0, < 0.14.6 · >= 0.15.0, < 0.15.2 | 0.12.15, 0.13.11, 0.14.6, 0.15.2 | GO-2026-5871 |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- WID-SEC-2026-1715 Fleet: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 7, 2026