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Gnutls: gnutls: security bypass due to incorrect name constraint handling

CVSS 3.1 7.4 HIGHCheck source for fixed versionsKEV status unknown

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-42011

Published

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.

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23 Oct 2026 15:48:27 UTC

Gnutls: gnutls: security bypass due to incorrect name constraint handling

cve-program · CVE-2026-42011 · Published

This historical link shows only this version and versions saved before it. Browse all advisory history.

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Sources read 12 Nov 19:39 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current