cbcvebase.
CVE-2026-42011
published 2026-05-07

CVE-2026-42011: A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs)…

high7.4CVSS 3.1
AVNACHPRNUINSUCHIHAN
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

Affected

2 ranges
VendorProductVersion rangeFixed in
gnugnutls——
ubuntugnutls28——