5.3Media
CVE-2026-102265PyJWT: Uncaught RecursionError in jwt.decode() on deeply nested token header
Descripción
PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWS._load in jwt/api_jws.py is affected because parser catches ValueError but not RecursionError. This occurs when a deeply nested token header reaches json.loads. As a result, RecursionError escapes the documented PyJWT error hierarchy. Consequently, an unauthenticated malformed token can cause a request-level failure and HTTP 500. This issue is fixed in version 2.14.0.
Debilidad (CWE):
CWE-674
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| jpadilla | pyjwt | >= 2.13.0, < 2.14.0 | |
| pyjwt project | pyjwt | 2.13.0 |
Referencias y parches
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-8wjv-2p76-3863 ExploitMitigationVendor Advisory
- https://github.com/jpadilla/pyjwt/commit/06573692ebcdec8831c3927513b3e87c31fbbb62 Patch
- https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 ProductRelease Notes
Coincidencias CPE (NVD) (1)
cpe:2.3:a:pyjwt_project:pyjwt:2.13.0:*:*:*:*:*:*:*