CVE-2026-122310 Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath
CriticalCVSS 9.4
- Published
- Updated
- Exploit status
- No public exploit known
Description
Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose fragment or query the Kubernetes client discards. A namespace-scoped user who can create a Policy can hide ../ segments behind # or ? to reach cluster-scoped endpoints with Kyverno's ServiceAccount, gaining cluster admin.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kyverno | >= 1.19.1, < 1.19.2 | 1.19.2 |
References
- GitHub Security Advisory (GHSA-3xfv-vq8x-qhg4) vendor-advisory
- VulnCheck Advisory: Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath third-party-advisory