CVE-2026-93539

EUVD-2026-88296 · Published Sep 28, 2026 · 3w ago

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.

Technologies

Suse Rancher Fleet

Weaknesses

CWE-306

CVSS scores

v3.15.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

MITRE ATT&CK

Inferred

Where this vulnerability fits in an attack

ReconImpact

Initial Access

T1190Exploit Public-Facing Application

References

https://github.com/rancher/fleet/security/advisories/GHSA-8vfv-33cg-g75q

Potentially impacted assets

See if this affects your attack surface