Improper Certificate Validation Affecting gnutls-debugsource package, versions <0:3.8.10-4.el9_8


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-ROCKY9-GNUTLSDEBUGSOURCE-17135773
  • published3 Jun 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

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

How to fix?

Upgrade Rocky-Linux:9 gnutls-debugsource to version 0:3.8.10-4.el9_8 or higher.
This issue was patched in RLSA-2026:20612.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-debugsource package and not the gnutls-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 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