CVE-2026-100707
Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.
- Published Sep 26, 2026
- CVSS 8.3 high
- 0.5% chance of exploitation in the next 30 days (EPSS)
- A fix is available