PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in jwt/api_jwk.py. This occurs when a JWK Set contains a malformed RSA key alongside otherwise usable keys. As a result, one malformed member aborts construction of the entire PyJWKSet. Consequently, applications can experience authentication failures or request-level denial of service. This issue is fixed in version 2.14.0.
Weakness
The product does not handle or incorrectly handles an exceptional condition.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pyjwt | Pyjwt_project | 2.9.0 (including) | 2.14.0 (excluding) |
| Pyjwt | Ubuntu | upstream | * |