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CVE-2026-42013

8.2 high SSVC exploitation: none Published
NVD · CVE.org

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-29 05:55
  2. First seenCVSS 8.2NVD modified 2026-10-14 20:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 32