CVE-2026-102265
CVE-2026-102265 updated by NVD
Summary
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.
Affected packages
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| PyPI | pyJWT | — | 2.14.0 |
Remediation: Upgrade to 2.14.0 or later.
References
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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.