CVE-2026-102274
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in jwt/api_jwk.py. This occurs when a JWK Set contains a malformed RSA key alongside otherwise usable keys. As a result, one malformed member aborts construction of the entire PyJWKSet. Consequently, applications can experience authentication failures or request-level denial of service. This issue is fixed in version 2.14.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jpadilla | pyjwt | >= 2.9.0, < 2.14.0 | affected |
Weaknesses
- CWE-755: CWE-755: Improper Handling of Exceptional Conditions
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w6j9-cwv2-h6wq
- https://github.com/jpadilla/pyjwt/commit/8915570a0bfda9f0ff0e34e7fb09bdb9d71580cf
- https://github.com/jpadilla/pyjwt/releases/tag/2.14.0
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