CVE-2026-67693

LOWCVSS 3.7

Description

An issue in gnutls v.3.8.13 allows an attacker to obtain sensitive information via failing to reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU)

Timeline

Published:October 8th, 2026 7:18 PM

Last modified:October 19th, 2026 3:17 PM

CVSS Scoring

CVSS v3: 3.7 (LOW)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-367

References & Reports

Advisories, patches, and third-party reports

http://gnutls.com
https://gist.github.com/lkloliver/6fbfc191bc6163942c8017551ac3f238
https://gitlab.com/gnutls/gnutls/-/blob/3.8.13/lib/x509/verify.c#L1119-1178
https://gitlab.com/gnutls/gnutls/-/work_items/1642

Source: NIST NVD · Data may lag official sources by up to one minute