Vulnerability/
REDHAT-BUG-2467289

REDHAT-BUG-2467289

Published May 6, 2026

Updated

libgnutls: Servers configured with RSA-PSK have wrongfully matched usernames with NUL character in them to ones truncated to NUL character, which could lead to an authentication bypass. Fix the check to perform comparison up to the full username length. Reported by Joshua Rogers of AISLE Research Team. [GNUTLS-SA-2026-04-29-4, CVSS: high] [CVE-2026-42010]

Affected Software

1 affected component

GnuTLS libgnutls

Event History

May 6, 2026

Data Sourced

via Red Hat·05:08 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is the vulnerability ID REDHAT-BUG-2467289?

REDHAT-BUG-2467289 is a vulnerability in libgnutls that allows for an authentication bypass due to improper handling of usernames with NUL characters.

What is the severity of REDHAT-BUG-2467289?

The severity of REDHAT-BUG-2467289 is significant as it can lead to unauthorized access if exploited.

How do I fix REDHAT-BUG-2467289?

To fix REDHAT-BUG-2467289, the comparison checks in libgnutls should be updated to consider the full length of usernames.

Who reported the vulnerability REDHAT-BUG-2467289?

The vulnerability REDHAT-BUG-2467289 was reported by Joshua Rogers.

What software is affected by REDHAT-BUG-2467289?

The software affected by REDHAT-BUG-2467289 is GnuTLS libgnutls.

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