{"id":"CVE-2026-102274","published":"2026-09-28T21:17:15.677","lastModified":"2026-09-29T20:17:12.297","description":"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.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-755"],"vendors":[],"products":[],"references":[{"url":"https://github.com/jpadilla/pyjwt/commit/8915570a0bfda9f0ff0e34e7fb09bdb9d71580cf","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/releases/tag/2.14.0","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w6j9-cwv2-h6wq","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w6j9-cwv2-h6wq","tags":[]}],"exploitRefs":[{"url":"https://github.com/jpadilla/pyjwt/commit/8915570a0bfda9f0ff0e34e7fb09bdb9d71580cf","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/releases/tag/2.14.0","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w6j9-cwv2-h6wq","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w6j9-cwv2-h6wq","tags":[]}],"hasPoc":true,"ai":null}