CVE-2026-67693 Affecting gnutls28 package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-UBUNTU2204-GNUTLS28-20888022
  • published15 Oct 2026
  • disclosed8 Oct 2026

Introduced: 8 Oct 2026

NewCVE-2026-67693  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 gnutls28.

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:22.04 relevant fixed versions and status.

GnuTLS v3.8.13 does not reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU). NOTE: the Supplier does not consider this an actionable security vulnerability because of its "threat model doesn't consider attacks only possible by modifying anything within the trust boundary (private keys, trusted certificate authorities and their issued certificates including intermediate CAs, etc.)" policy.

CVSS Base Scores

version 3.1