CVE-2026-39350
ADVISORY - githubSummary
Impact
The serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting SA e.g. cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants.
Patches
Fixes are available in 1.29.2, 1.28.6, and 1.27.9
Workarounds
None
EPSS Score: 0.00025 (0.069)
Common Weakness Enumeration (CWE)
ADVISORY - github
Incorrect Regular Expression
ADVISORY - redhat
Permissive Regular Expression
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