https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-10-01T08:27:57.268367+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/cve-2026-102265 CVE-2026-102265 — PyJWT: Uncaught RecursionError in jwt.decode() on deeply nested token header 2026-10-01T08:27:57.269775+00:00

Affected: jpadilla pyjwt

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.