CVE-2026-84200 PUBLISHED

Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions

Assigner: VulnCheck
Reserved: 01.09.2026 Published: 01.09.2026 Updated: 01.09.2026

Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mode is combined with two PolicyExceptions, the less restrictive exception takes precedence, allowing an attacker to bypass the policy by crafting a resource name that matches the second exception's name pattern (e.g., 'ingress'). This can be used to circumvent policies such as one blocking hostPath volumes. Fixed in v1.13.0.

Metrics

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 9.4

Product Status

Vendor kyverno
Product kyverno
Versions Default: unaffected
  • affected from 0 to 1.13.0 (excl.)
  • Version 1.13.0 is unaffected

Credits

  • r0binak reporter

References

Problem Types

  • Improper Access Control CWE