CVE-2026-42013

ADVISORY - nist

Summary

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.

EPSS Score⁠: 0.00052 (0.164)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-1284⁠

Improper Validation of Specified Quantity in Input

Impacted images

Advisories

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