Improper Handling of Exceptional Conditions Affecting pyjwt package, versions [2.9.0,2.14.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PYJWT-20248628
- published29 Sept 2026
- disclosed28 Sept 2026
- creditDr. Pi3ch
Introduced: 28 Sep 2026
NewCVE-2026-102274 (opens in a new tab)How to fix?
Upgrade PyJWT to version 2.14.0 or higher.
Overview
PyJWT is a Python implementation of RFC 7519.
Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions via the PyJWK constructor in jwt/api_jwk.py when processing a JWK set containing a malformed key. An attacker who can supply a JWK set with a malformed entry causes an unhandled ValueError to propagate out of Algorithm.from_jwk, crashing the application.