Vulnerability in SUSE Rancher

[ Description ]Official description

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files. This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund23 Sep 2026WID-SEC-2026-3546

  Fleet: Multiple vulnerabilities Translated from German

  CVE-2026-93537CVE-2026-93539CVE-2026-93538+2 more CVEs

[ References ]References

• github.com/rancher/fleet/security/advisories/GHSA-q9v4-358v-r8q5Vendor Advisory