CVE-2026-32597

{"id": "CVE-2026-32597", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-03-13T19:55:09.500", "references": [{"url": "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-345"}, {"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 \u00a74.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0."}, {"lang": "es", "value": "PyJWT es una implementaci\u00f3n de JSON Web Token en Python. Antes de la 2.12.0, PyJWT no valida el par\u00e1metro de encabezado crit (Cr\u00edtico) definido en la RFC 7515 \u00a74.1.11. Cuando un token JWS contiene un array crit que lista extensiones que PyJWT no entiende, la biblioteca acepta el token en lugar de rechazarlo. Esto viola el requisito MUST en la RFC. Esta vulnerabilidad est\u00e1 corregida en la 2.12.0."}], "lastModified": "2026-03-19T13:30:29.217", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D2DD4AAA-0853-4F5A-A6BA-DB29F584BD6E", "versionEndExcluding": "2.12.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}