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

🗓️ 20 Jul 2026 06:46:25Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Gnutls certificate validation may fall back to CN when SAN is oversized, enabling spoofing or mitm.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2aarch64gnutls3.7.6-21.el9_2.7gnutls-3.7.6-21.el9_2.7.aarch64.rpm
Red Hat Enterprise Linux9.2i686gnutls3.7.6-21.el9_2.7gnutls-3.7.6-21.el9_2.7.i686.rpm
Red Hat Enterprise Linux9.2ppc64legnutls3.7.6-21.el9_2.7gnutls-3.7.6-21.el9_2.7.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xgnutls3.7.6-21.el9_2.7gnutls-3.7.6-21.el9_2.7.s390x.rpm
Red Hat Enterprise Linux9.2x86_64gnutls3.7.6-21.el9_2.7gnutls-3.7.6-21.el9_2.7.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64gnutls-c++3.7.6-21.el9_2.7gnutls-c++-3.7.6-21.el9_2.7.aarch64.rpm
Red Hat Enterprise Linux9.2i686gnutls-c++3.7.6-21.el9_2.7gnutls-c++-3.7.6-21.el9_2.7.i686.rpm
Red Hat Enterprise Linux9.2ppc64legnutls-c++3.7.6-21.el9_2.7gnutls-c++-3.7.6-21.el9_2.7.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xgnutls-c++3.7.6-21.el9_2.7gnutls-c++-3.7.6-21.el9_2.7.s390x.rpm
Red Hat Enterprise Linux9.2x86_64gnutls-c++3.7.6-21.el9_2.7gnutls-c++-3.7.6-21.el9_2.7.x86_64.rpm
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22 Jul 2026 20:43Current
7.6High risk
Vulners AI Score7.6
CVSS 3.18.2
EPSS0.00423
SSVC
6