VULNERABILITY INTELLIGENCE
CVE-2026-42011
CVSS score7.4 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-05-07
Last modified2026-10-30
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
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.
Weakness classification
- secalert@redhat.com: CWE-295