CVE-2026-91769
Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-297
Validación incorrecta de certificados con host no coincidente
Fecha de publicación:
25/09/2026
Última modificación:
25/09/2026
Descripción
*** Pendiente de traducción *** PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN was still accepted when its CN matched the requested peer_name. A certificate trusted by the client for one name can therefore be used to impersonate another.
Impacto
Puntuación base 3.x
4.30
Gravedad 3.x
MEDIA


