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CVE-2026-42011

Medium

Elevated severity or exploit probability.

CVSS base
7.4 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS — probability of exploitation (30 days)
0.6%
44.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-295
Published 2026-05-07 · modified 2026-09-03

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.

References

Official: NVD · CVE.org