CVE-2026-73208
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-287
Autenticación incorrecta
Fecha de publicación:
28/08/2026
Última modificación:
28/08/2026
Descripción
*** Pendiente de traducción *** An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token response does not contain a scope claim, the audience claim is used in its place and checked against the configured required scopes. These are different concepts, and the audience claim does not describe what a token is allowed to do. A token that grants no relevant permissions can be accepted because its intended recipient value happens to match a configured scope name, granting access that should have been denied. It also hides an identity provider misconfiguration where scopes are not being issued at all. Ensure the identity provider issues a scope claim for all tokens used with Dovecot, and that configured scope names do not match audience values. Update to non-vulnerable version. No publicly available exploits are known.
Impacto
Puntuación base 3.x
7.40
Gravedad 3.x
ALTA