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