Uncontrolled Recursion Affecting py3.11-pyjwt package, versions <2.14.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.29% (20th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-PY311PYJWT-20344497
  • published1 Oct 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

NewCVE-2026-102265  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Minimos:latest py3.11-pyjwt to version 2.14.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3.11-pyjwt package and not the py3.11-pyjwt package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1