CVE-2026-82454
Gravedad CVSS v4.0:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
29/08/2026
Última modificación:
29/08/2026
Descripción
*** Pendiente de traducción *** The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The decodeAppleToken function extracted the 'alg' field from the attacker-supplied JWT header and passed it as the sole allowed algorithm to jwt.verify(). Using jsonwebtoken v8 (which does not validate key/algorithm compatibility), an attacker can set alg=HS256 and sign a forged token using Apple's publicly available RSA public key as the HMAC secret, bypassing signature verification and impersonating any Apple-linked account.
Impacto
Puntuación base 4.0
9.30
Gravedad 4.0
CRÍTICA
Puntuación base 3.x
9.10
Gravedad 3.x
CRÍTICA