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gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name

🗓️ 25 Jun 2026 18:37:57Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Gnutls certificate validation bypass: oversized subject name triggers common name fallback, enabling spoofing.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.6aarch64gnutls0:3.8.3-6.el9_6.4gnutls-0:3.8.3-6.el9_6.4.aarch64.rpm
Red Hat Enterprise Linux9.6i686gnutls0:3.8.3-6.el9_6.4gnutls-0:3.8.3-6.el9_6.4.i686.rpm
Red Hat Enterprise Linux9.6ppc64legnutls0:3.8.3-6.el9_6.4gnutls-0:3.8.3-6.el9_6.4.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xgnutls0:3.8.3-6.el9_6.4gnutls-0:3.8.3-6.el9_6.4.s390x.rpm
Red Hat Enterprise Linux9.6x86_64gnutls0:3.8.3-6.el9_6.4gnutls-0:3.8.3-6.el9_6.4.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64gnutls-c++0:3.8.3-6.el9_6.4gnutls-c++-0:3.8.3-6.el9_6.4.aarch64.rpm
Red Hat Enterprise Linux9.6i686gnutls-c++0:3.8.3-6.el9_6.4gnutls-c++-0:3.8.3-6.el9_6.4.i686.rpm
Red Hat Enterprise Linux9.6ppc64legnutls-c++0:3.8.3-6.el9_6.4gnutls-c++-0:3.8.3-6.el9_6.4.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xgnutls-c++0:3.8.3-6.el9_6.4gnutls-c++-0:3.8.3-6.el9_6.4.s390x.rpm
Red Hat Enterprise Linux9.6x86_64gnutls-c++0:3.8.3-6.el9_6.4gnutls-c++-0:3.8.3-6.el9_6.4.x86_64.rpm
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13 Jul 2026 16:36Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.18.2
EPSS0.00423
SSVC
8