CVE-2026-95184: High severity GNUTLS GNUTLS vulnerability

Published Oct 8, 2026
·
Updated

GnuTLS v3.8.13 does not properly enforce name constraints, as demonstrated by a permitted subtree violation for "EE O=Evil accepted although outside permitted O=Good." 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.

Other sources

Improper certificate validation in gnutls v3.8.13 causes the application to reject legitimate certificates for valid users, leading to a Denial of Service (DoS).

— Microsoft

Affected Software

16 affected components
GNUTLS GNUTLS=3.8.13
debian/gnutls28*
debian/gnutls28*
debian/gnutls28*
debian/gnutls28<=3.7.9-2+deb12u7, <=3.8.9-3+deb13u4, <=3.8.13-1
ubuntu/gnutls26*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*
ubuntu/gnutls28*

Event History

Oct 8, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via OSV·06:18 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·06:18 PM
DescriptionSeverityWeakness
Oct 11, 2026
Data Sourced
via Microsoft·08:54 AM
DescriptionSeverityWeakness

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203