Description (CNA)
PyJWT is a Python implementation of JSON Web Token standards. From 2.11.0 through 2.13.0, PyJWT's PyJWT._merge_options() method can modify a caller-supplied mutable options mapping when verify_signature is false. If an application reuses that same mapping for a later decode() or decode_complete() call and changes verify_signature to true, the mapping can retain false values for expiration, not-before, issued-at, audience, issuer, subject, and JWT ID checks. A signed token with invalid registered claims can then be accepted without disabling signature verification, but applications that create a fresh options mapping for each call are not affected.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| jpadilla / pyjwt | affected >= 2.11.0, <= 2.13.0 |
CWE
CWE-471
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-gvp8-978c-rx2q
- https://github.com/jpadilla/pyjwt/issues/679
- https://github.com/jpadilla/pyjwt/commit/0c87c8c8b1a74cac99ad8115f3050efcb7fbed35
ADP enrichment
No English description supplied.