Improper Certificate Validation Affecting gnutls-utils-debuginfo package, versions <0:3.8.10-4.amzn2023.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-AMZN2023-GNUTLSUTILSDEBUGINFO-17288876
  • published10 Jun 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-42013  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 gnutls-utils-debuginfo to version 0:3.8.10-4.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1808.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-utils-debuginfo package and not the gnutls-utils-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1