{"schema_version":"1","view":"events","data":[{"id":3454,"advisory_id":"04288003-22c0-468e-8017-ee831e9a8942","group_id":"advisory:04288003-22c0-468e-8017-ee831e9a8942","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-101918","source_published_at":"2026-09-28T20:11:55.278+00:00","published_at":"2026-10-24T21:35:44.576196+00:00","extraction_method":"structured","technologies":["core-cve","pyjwt"],"cve_ids":["CVE-2026-101918"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"PyJWT: Unauthenticated RecursionError DoS in pre-verification payload parse (PyJWKClient.get_signing_key_from_jwt / verify_signature=False)","summary":"PyJWT is a Python implementation of JSON Web Token standards. From 2.0.0a1 until 2.15.0, PyJWT PyJWKClient.get_signing_key_from_jwt is affected because payload parser catches ValueError but not RecursionError. This occurs when an attacker-controlled recursively nested payload reaches json.loads. As a result, documented PyJWT exception handling does not contain the failure. Consequently, an unauthenticated request can raise an exception that may produce an HTTP 500 response. The advisory-defined affected implementation also includes jwt/api_jwt.py, verify_signature=False. This issue is fixed in version 2.15.0.","evidence":"cve:CVE-2026-101918","products":[{"name":{"value":"pyjwt","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-101918","aliases":["CVE-2026-101918"],"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":">= 2.0.0a1, < 2.15.0"}]}],"modified":"2026-09-29T13:57:29.516Z","provider":"cve","references":["https://github.com/jpadilla/pyjwt/security/advisories/GHSA-42vr-xj54-vc7v","https://github.com/jpadilla/pyjwt/commit/5fde08a6cf906aa7698de2d6391d88b73006b17b","https://github.com/jpadilla/pyjwt/releases/tag/2.15.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-101918","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T13:55:59.459735Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T13:57:29.516Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-28T20:11:55.278Z"}}},"related_cves":[{"value":"CVE-2026-101918","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"},"priority":{"reasons":[],"severity":"medium","linked_cves":[],"fix_available":false,"known_exploited":false,"publisher_severity":"medium"},"context_update":false,"detail_url":"/events/3454"}],"next_after":3454,"next_before":3454}