{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "OpenID Connect", "vendor": "OpenID", "versions": [{"lessThanOrEqual": "1.0 errata set 2", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client."}, {"lang": "es", "value": "OpenID Connect Core a trav\u00e9s del conjunto de erratas 1.0 2 permite la inyecci\u00f3n de audiencia en determinadas situaciones. Cuando se utiliza el mecanismo de autenticaci\u00f3n private_key_jwt, un servidor de autorizaci\u00f3n malintencionado podr\u00eda enga\u00f1ar a un cliente para que escriba valores controlados por el atacante en la audiencia, incluidos endpoints de token o identificadores de emisor de otros servidores de autorizaci\u00f3n. El servidor de autorizaci\u00f3n malintencionado podr\u00eda entonces utilizar estos JWT de clave privada para hacerse pasar por el cliente."}], "id": "CVE-2025-27370", "lastModified": "2026-06-17T09:03:28.727", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 4.7, "source": "cve@mitre.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-27370", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-04T16:59:06.842747Z", "version": "2.0.3"}}]}, "published": "2025-03-03T18:15:40.650", "references": [{"source": "cve@mitre.org", "url": "https://eprint.iacr.org/2025/629"}, {"source": "cve@mitre.org", "url": "https://github.com/OWASP/ASVS/issues/2678"}, {"source": "cve@mitre.org", "url": "https://openid.net/notice-of-a-security-vulnerability/"}, {"source": "cve@mitre.org", "url": "https://openid.net/wp-content/uploads/2025/01/OIDF-Responsible-Disclosure-Notice-on-Security-Vulnerability-for-private_key_jwt.pdf"}, {"source": "cve@mitre.org", "url": "https://talks.secworkshop.events/osw2025/talk/R8D9BS/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-305"}], "source": "cve@mitre.org", "type": "Secondary"}]}