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CVE-2025-27371

Estado: AplazadaMedia (6.9)—

In certain IETF OAuth 2.0-related specifications, when the JSON Web Token Profile for OAuth 2.0 Client Authentication mechanism is used, there are ambiguities in the audience values of JWTs sent to authorization servers. The affected RFCs may include RFC 7523, and also RFC 7521, RFC 7522, RFC 9101 (JAR), and RFC 9126 (PAR).

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-27371",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-27371",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-03-04T16:49:31.778471Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "IETF",
          "product": "RFC 7523",
          "versions": [
            {
              "status": "affected",
              "version": "7523",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2025-03-03T18:15:40.850",
  "references": [
    {
      "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/",
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In certain IETF OAuth 2.0-related specifications, when the JSON Web Token Profile for OAuth 2.0 Client Authentication mechanism is used, there are ambiguities in the audience values of JWTs sent to authorization servers. The affected RFCs may include RFC 7523, and also RFC 7521, RFC 7522, RFC 9101 (JAR), and RFC 9126 (PAR)."
    },
    {
      "lang": "es",
      "value": "En ciertas especificaciones relacionadas con OAuth 2.0 de IETF, cuando se utiliza el mecanismo de autenticación de cliente JSON Web Token Profile for OAuth 2.0, existen ambigüedades en los valores de audiencia de los JWT enviados a los servidores de autorización. Las RFC afectadas pueden incluir RFC 7523, y también RFC 7521, RFC 7522, RFC 9101 (JAR) y RFC 9126 (PAR)."
    }
  ],
  "lastModified": "2026-06-17T09:03:28.837",
  "sourceIdentifier": "cve@mitre.org"
}