CVE-2026-67693

Published: Oct 8, 2026Modified: Oct 19, 2026

3.7

Vector

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

Exploitability: 2.2 / Impact: 1.4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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)

Related CWEs

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

References (4)

http://gnutls.com

Source: cve@mitre.org

https://gist.github.com/lkloliver/6fbfc191bc6163942c8017551ac3f238

Source: cve@mitre.org

https://gitlab.com/gnutls/gnutls/-/blob/3.8.13/lib/x509/verify.c#L1119-1178

Source: cve@mitre.org

https://gitlab.com/gnutls/gnutls/-/work_items/1642

Source: cve@mitre.org

Timeline

No history available yet.