VULNERABILITY INTELLIGENCE

CVE-2026-27138

CVSS score5.9 MEDIUM

EPSS probability0.38%

CISA KEVNot currently listed

Published2026-03-06

Last modified2026-06-17

Description

Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.