CVE-2026-82465
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-345
Verificación insuficiente de autenticidad de los datos
Fecha de publicación:
29/08/2026
Última modificación:
29/08/2026
Descripción
*** Pendiente de traducción *** pac4j-saml before 6.5.6 does not require signature validation of SAML LogoutRequest messages in SAML2LogoutValidator.validateLogoutRequest(). When an IdP sends no SessionIndex, a session can be destroyed based solely on the NameID, allowing an unauthenticated attacker to submit an unsigned LogoutRequest with a guessed identifier (e.g., an email address used as NameID) to terminate a victim's SAML session.
Impacto
Puntuación base 4.0
6.90
Gravedad 4.0
MEDIA
Puntuación base 3.x
5.30
Gravedad 3.x
MEDIA
Referencias a soluciones, herramientas e información
- https://github.com/pac4j/pac4j
- https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-saml/src/main/java/org/pac4j/saml/logout/impl/SAML2LogoutValidator.java
- https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e
- https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html
- https://www.vulncheck.com/advisories/pac4j-saml-before-6.5.6-session-destruction-via-unsigned-logoutrequest