Improper Certificate Validation Affecting gnutls package, versions <3.8.3-150600.4.20.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.33% (25th percentile)

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  • Snyk IDSNYK-SLES157-GNUTLS-17101882
  • published30 May 2026
  • disclosed29 May 2026

Introduced: 29 May 2026

NewCVE-2026-42012  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 gnutls to version 3.8.3-150600.4.20.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.

CVSS Base Scores

version 3.1