Information Exposure Affecting gnutls28 package, versions <3.8.3-1.1ubuntu3.6


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-UBUNTU2404-GNUTLS28-16355238
  • published20 May 2026
  • disclosed1 Jun 2026

Introduced: 20 May 2026

CVE-2026-5419  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.04 gnutls28 to version 3.8.3-1.1ubuntu3.6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of information disclosure.

CVSS Base Scores

version 3.1