CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constraint handling
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 7.4EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Ciclo de vida
07 may 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Productos afectados
Red Hat · Red Hat Discovery 2Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Hardened ImagesRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat Update Infrastructure 5¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://access.redhat.com/errata/RHSA-2026:13274https://access.redhat.com/errata/RHSA-2026:20611https://access.redhat.com/errata/RHSA-2026:20612https://access.redhat.com/errata/RHSA-2026:20613https://access.redhat.com/errata/RHSA-2026:26319https://access.redhat.com/errata/RHSA-2026:26409https://access.redhat.com/errata/RHSA-2026:29197https://access.redhat.com/security/cve/CVE-2026-42011https://bugzilla.redhat.com/show_bug.cgi?id=2467437