CVE-2026-35042

HIGH

7.5

Descricao

fast-jwt provides fast JSON Web Token (JWT) implementation. In 6.1.0 and earlier, fast-jwt does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that fast-jwt does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/6/2026

Ultima modificacao4/6/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-345CWE-636

Referencias

https://github.com/nearform/fast-jwt/security/advisories/GHSA-hm7r-c7qw-ghp6(security-advisories@github.com)

https://www.rfc-editor.org/rfc/rfc7515.html#section-4.1.11(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

This product uses data from the NVD API but is not endorsed or certified by the NVD.