What’s Vulnerable › Vulnerabilities
CVE-2026-93539: Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook Receiver
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-28 · updated 2026-10-07
- Weakness: CWE-306
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.
Affected products
- SUSE Fleet: from 0.16.0 before 0.16.2 — fixed in 0.16.2
How to fix
Upgrade to a fixed version: SUSE Fleet 0.16.2. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-93539 or the next vulnerability affects your stack