Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-c5qq-7g2q-cpqp
- https://www.vulncheck.com/advisories/kyverno-before-1.19.1-namespace-isolation-b
FAQ
What is CVE-2026-100707?
CVE-2026-100707 is a vulnerability with a CVSS score of 7.7 (HIGH). 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-...
How severe is CVE-2026-100707?
CVE-2026-100707 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-100707?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.