Quick answers
- Is CVE-2026-93539 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93539 being exploited in the wild.
- How severe is CVE-2026-93539?
- Medium severity, with a CVSS score of 5.4, published 28 September 2026.
- Which products and versions are affected?
- Suse Rancher Fleet 0.16.0, 0.16.1.
- Is there a fix for CVE-2026-93539?
- A patch was published on 2026-09-28: v0.16.2 released with fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-93539 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-93539?
- Check whether you run Suse Rancher Fleet at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The gitjob webhook service fails to verify incoming webhook requests when no secret is configured, allowing unauthenticated callers to modify the spec.pollingInterval field of GitRepo resources across all namespaces. The vulnerability requires network access to the webhook endpoint and affects only Fleet v0.16.0 and v0.16.1; earlier versions do not perform the vulnerable spec mutation. Patches in v0.16.2 enforce secret verification before allowing webhook-triggered mutations.
Affected products
- SUSE Rancher Fleet 0.16.0, 0.16.1
Timeline
- 2026-09-23: disclosed
- 2026-09-28: patched: v0.16.2 released with fix