{"schema_version":"1","data":[{"id":3452,"advisory_id":"8feea3f5-b8c6-4b3c-98ab-07863061864d","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102269","source_published_at":"2026-09-28T20:27:54.521+00:00","published_at":"2026-10-24T21:35:43.460144+00:00","extraction_method":"structured","technologies":["core-cve","pyjwt"],"cve_ids":["CVE-2026-102269"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"PyJWT: Non-canonical signature segments enable raw-token revocation bypass","summary":"PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.","evidence":"cve:CVE-2026-102269","products":[{"name":{"value":"pyjwt","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-102269","aliases":["CVE-2026-102269"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.8,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}}],"affected":[{"vendor":"jpadilla","product":"pyjwt","versions":[{"status":"affected","version":"< 2.14.0"}]}],"modified":"2026-09-29T13:49:47.562Z","provider":"cve","references":["https://github.com/jpadilla/pyjwt/security/advisories/GHSA-hxm8-2xgr-2p9m","https://github.com/jpadilla/pyjwt/commit/e6f48401001609a8f99e71fcaf355fb895d508a8","https://github.com/jpadilla/pyjwt/releases/tag/2.14.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102269","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T13:48:45.838410Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T13:49:47.562Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-28T20:27:54.521Z"}}},"related_cves":[{"value":"CVE-2026-102269","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":3452,"next_before":3452}