CVE-2026-35041
Gravedad CVSS v3.1:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
09/04/2026
Última modificación:
09/04/2026
Descripción
*** Pendiente de traducción *** fast-jwt provides fast JSON Web Token (JWT) implementation. From 5.0.0 to 6.2.0, a denial-of-service condition exists in fast-jwt when the allowedAud verification option is configured using a regular expression. Because the aud claim is attacker-controlled and the library evaluates it against the supplied RegExp, a crafted JWT can trigger catastrophic backtracking in the JavaScript regex engine, resulting in significant CPU consumption during verification. This vulnerability is fixed in 6.2.1.
Impacto
Puntuación base 3.x
4.20
Gravedad 3.x
MEDIA
Referencias a soluciones, herramientas e información
- https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94
- https://github.com/nearform/fast-jwt/pull/595
- https://github.com/nearform/fast-jwt/releases/tag/v6.2.1
- https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf
- https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf