CVE-2026-82462
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-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification.
Impacto
Puntuación base 4.0
6.90
Gravedad 4.0
MEDIA
Puntuación base 3.x
6.50
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-oidc/src/main/java/org/pac4j/oidc/credentials/extractor/OidcCredentialsExtractor.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-oidc-before-6.5.6-authentication-bypass-via-access-token-substitution



