HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-6731 — X.509 name constraint bypass via the Subject Common Name when treated as a DNS-t...

·Source: NIST NVD

Updated:

Executive Summary

X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted.

Analysis

X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted. CVSS Score: 7.5. Published: 2026-06-25T21:16:28.400.

Indicators of Compromise (1)

CVE (1)
CVE-2026-6731
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jun 25, 2026. Verified by: NIST.

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