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.
| Vendor | Product | Versions |
|---|---|---|
| nearform | fast-jwt | <= 6.1.0 |
Updated vendor to nearform, changed severity to MEDIUM, and noted that no exploit is available.
Initial creation
