CVE-2026-67693CWE-367

CVE-2026-67693

Low · published October 8, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
4.0
In the wild
Unconfirmed
What it is

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)

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00151 · 4.0th percentile
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2026-10-08T23:18Z
References (4)
http://gnutls.com · [email protected]https://gist.github.com/lkloliver/6fbfc191bc6163942c8017551ac3f238 · [email protected]https://gitlab.com/gnutls/gnutls/-/blob/3.8.13/lib/x509/verify.c#L1119-1178 · [email protected]https://gitlab.com/gnutls/gnutls/-/work_items/1642 · [email protected]
EPSS history
Timeline
  • 10 OCT 03:30Z
    EPSS moved — → 0%
    epss
  • 08 OCT 00:00Z
    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…
    cvelistv5
  • 08 OCT 00:00Z
    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…
    cvelistv5