AUGUST 26, 2026
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Case File

CVE-2026-6731

HIGH · CVSS 7.5 EPSS 0.12% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-25 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-6731
Severity
HIGH
CVSS
7.5
EPSS
0.12%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)