{"id":"CVE-2026-102275","summary":"PyJWT accepts inconsistent OKP x/d JWKs, causing public/private key identity confusion","details":"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.","aliases":["GHSA-x33g-cr3x-6449"],"modified":"2026-09-30T03:47:05.415948510Z","published":"2026-09-28T20:46:33.169Z","database_specific":{"cwe_ids":["CWE-345","CWE-348"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102275.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/jpadilla/pyjwt/releases/tag/2.15.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102275.json"},{"type":"ADVISORY","url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102275"},{"type":"FIX","url":"https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jpadilla/pyjwt","events":[{"introduced":"79c23d7d9d32364be8f94680d8eda7135c3a15d5"},{"fixed":"3cd9ceec33ced359decbad75b413ad668ae6332c"},{"fixed":"1d41a6478e1562e68ff667fcd703356acf085f68"}],"database_specific":{"extracted_events":[{"introduced":"2.1.0"},{"fixed":"2.15.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.14.0","2.13.0","2.12.1","2.12.0","2.11.0","2.10.1","2.10.0","2.9.0","2.8.0","2.7.0","2.6.0","2.5.0","2.4.0","2.3.0","2.2.0","2.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102275.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N"}]}