Vulnerability in SUSE Rancher

[ Description ]Official description

A vulnerability was discovered in Fleet's Git webhook receiver (the gitjob webhook service). When a webhook secret is not configured, incoming webhook requests are accepted without verification, and processing a request can change the spec.pollingInterval field of a matching GitRepo resource in any namespace. A caller with network access to the webhook service and no Kubernetes credentials can therefore alter GitRepo configuration outside the namespaces they are authorized for.  This only affects SUSE Rancher Fleet 0.16 before 0.16.2, older versions are not affected.

[ 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-8vfv-33cg-g75qVendor Advisory