CVE-2026-6731

UNKNOWN 0.0

X.509 name constraint bypass via Subject CN treated as a DNS name

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-295
Vendor	wolfssl
Product	wolfssl
Published	Jun 25, 2026

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Affected Versions

wolfSSL / wolfSSL

3.9.10 ≤ 5.9.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/wolfSSL/wolfssl/pull/10223 wolfssl.com: https://www.wolfssl.com/docs/security-vulnerabilities/

Credits

d0sf3t (Aradex)