CVE-2026-42010 Affecting gnutls package, versions <0:3.8.13-1.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (23rd percentile)

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  • Snyk IDSNYK-RHEL10-GNUTLS-16537522
  • published8 May 2026
  • disclosed29 Apr 2026

Introduced: 29 Apr 2026

CVE-2026-42010  (opens in a new tab)

How to fix?

Upgrade RHEL:10 gnutls to version 0:3.8.13-1.hum1 or higher.
This issue was patched in RHSA-2026:13274.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.

CVSS Base Scores

version 3.1