CVE-2026-35042

HIGH

7.5

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung7.5

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht4/6/2026

Zuletzt geandert4/6/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-345CWE-636

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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