{"id":"CVE-2026-102275","published":"2026-09-28T21:17:15.857","lastModified":"2026-09-29T14:17:19.873","description":"PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in  jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP private JWK supplies non-corresponding x and d components. As a result, identity derived from x can differ from operations performed with d. Consequently, if an integration also accepts private key parameters from a proof header without rejecting them, an attacker may use a stolen sender-constrained token without the legitimate private key. This issue is fixed in version 2.15.0.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","cwes":["CWE-345","CWE-348"],"vendors":[],"products":[],"references":[{"url":"https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332c","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/releases/tag/2.15.0","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449","tags":[]}],"exploitRefs":[{"url":"https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332c","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/releases/tag/2.15.0","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449","tags":[]},{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449","tags":[]}],"hasPoc":true,"ai":null}