CVE-2024-49755

{
  "id": "CVE-2024-49755",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-49755",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-29T17:54:15.796016Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.1,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "DuendeSoftware",
          "product": "IdentityServer",
          "versions": [
            {
              "status": "affected",
              "version": ">= 7.0.0, < 7.0.8"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-10-28T20:15:06.297",
  "references": [
    {
      "url": "https://github.com/DuendeSoftware/IdentityServer/commit/f28cac921c1f545afe65af71a9327224755b6dac",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/DuendeSoftware/IdentityServer/security/advisories/GHSA-v9xq-2mvm-x8xc",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Duende IdentityServer is an OpenID Connect and OAuth 2.x framework for ASP.NET Core. IdentityServer's local API authentication handler performs insufficient validation of the cnf claim in DPoP access tokens. This allows an attacker to use leaked DPoP access tokens at local api endpoints even without possessing the private key for signing proof tokens. Note that this only impacts custom endpoints within an IdentityServer implementation that have explicitly used the LocalApiAuthenticationHandler for authentication. This vulnerability is patched in IdentityServer 7.0.8. Version 6.3 and below are unaffected, as they do not support DPoP in Local APIs."
    },
    {
      "lang": "es",
      "value": "Duende IdentityServer es un framework de trabajo de OpenID Connect y OAuth 2.x para ASP.NET Core. El controlador de autenticación de API local de IdentityServer realiza una validación insuficiente de la reclamación cnf en tokens de acceso DPoP. Esto permite que un atacante utilice tokens de acceso DPoP filtrados en endpoints de API locales incluso sin poseer la clave privada para firmar tokens de prueba. Tenga en cuenta que esto solo afecta a los endpoints personalizados dentro de una implementación de IdentityServer que hayan utilizado explícitamente LocalApiAuthenticationHandler para la autenticación. Esta vulnerabilidad está corregida en IdentityServer 7.0.8. La versión 6.3 y anteriores no se ven afectadas, ya que no admiten DPoP en API locales."
    }
  ],
  "lastModified": "2026-06-17T08:00:23.273",
  "sourceIdentifier": "security-advisories@github.com"
}