Improper Certificate Validation Affecting gnutls package, versions <0:3.6.16-8.el8_10.6


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.33% (25th percentile)

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  • Snyk IDSNYK-ORACLE8-GNUTLS-17139641
  • published3 Jun 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

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

How to fix?

Upgrade Oracle:8 gnutls to version 0:3.6.16-8.el8_10.6 or higher.
This issue was patched in ELSA-2026-20611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by Oracle. See How to fix? for Oracle:8 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