{"schema_version":"1","data":[{"id":3450,"advisory_id":"64127b17-8234-4bb3-9c4d-ccf38db74ef8","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102273","source_published_at":"2026-09-28T20:38:28.161+00:00","published_at":"2026-10-24T21:35:42.320034+00:00","extraction_method":"structured","technologies":["core-cve","pyjwt"],"cve_ids":["CVE-2026-102273"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"PyJWT accepts public JWK containers as HMAC secrets","summary":"PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because HMAC key guard only recognizes top-level public JWK forms and misses container representations. This occurs when an application allows HMAC and asymmetric algorithms and passes a public JWK container as the raw key. As a result, public asymmetric key material is accepted as the HMAC secret. Consequently, an attacker who knows the public key can forge a token with arbitrary authenticated claims. This issue is fixed in version 2.14.0.","evidence":"cve:CVE-2026-102273","products":[{"name":{"value":"pyjwt","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","structured":{"id":"CVE-2026-102273","aliases":["CVE-2026-102273"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.4,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}}],"affected":[{"vendor":"jpadilla","product":"pyjwt","versions":[{"status":"affected","version":">= 2.13.0, < 2.14.0"}]}],"modified":"2026-09-29T13:44:49.200Z","provider":"cve","references":["https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w2cx-738m-mc7w","https://github.com/jpadilla/pyjwt/commit/801cd128528c62d9b23fcd161d1a2e1c17982f95","https://github.com/jpadilla/pyjwt/releases/tag/2.14.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102273","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-09-29T13:39:56.542639Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T13:44:49.200Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-28T20:38:28.161Z"}}},"related_cves":[{"value":"CVE-2026-102273","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":3450,"next_before":3450}