{"schema_version":"1","data":[{"id":5293,"advisory_id":"22b5cd82-a81e-42e4-a633-699de5815b31","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102265","source_published_at":"2026-09-28T20:48:04.664+00:00","published_at":"2026-10-24T22:06:30.925836+00:00","extraction_method":"structured","technologies":["core-cve","pyjwt"],"cve_ids":["CVE-2026-102265"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"PyJWT: Uncaught RecursionError in jwt.decode() on deeply nested token header","summary":"PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWS._load in jwt/api_jws.py is affected because parser catches ValueError but not RecursionError. This occurs when a deeply nested token header reaches json.loads. As a result, RecursionError escapes the documented PyJWT error hierarchy. Consequently, an unauthenticated malformed token can cause a request-level failure and HTTP 500. This issue is fixed in version 2.14.0.","evidence":"cve:CVE-2026-102265","products":[{"name":{"value":"pyjwt","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-102265","aliases":["CVE-2026-102265"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"jpadilla","product":"pyjwt","versions":[{"status":"affected","version":">= 2.13.0, < 2.14.0"}]}],"modified":"2026-10-01T15:01:31.377Z","provider":"cve","references":["https://github.com/jpadilla/pyjwt/security/advisories/GHSA-8wjv-2p76-3863","https://github.com/jpadilla/pyjwt/commit/06573692ebcdec8831c3927513b3e87c31fbbb62","https://github.com/jpadilla/pyjwt/releases/tag/2.14.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102265","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-01T15:00:55.850520Z"}}}],"references":[{"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-8wjv-2p76-3863","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-01T15:01:31.377Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-28T20:48:04.664Z"}}},"related_cves":[{"value":"CVE-2026-102265","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":5293,"next_before":5293}