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CVE-2025-64717

Full vulnerability record from the local CVENow database.

Description

ZITADEL is an open source identity management platform. Starting in version 2.50.0 and prior to versions 2.71.19, 3.4.4, and 4.6.6, a vulnerability in ZITADEL's federation process allowed auto-linking users from external identity providers to existing users in ZITADEL even if the corresponding IdP was not active or if the organization did not allow federated authentication. This vulnerability stems from the platform's failure to correctly check or enforce an organization's specific security settings during the authentication flow. An Organization Administrator can explicitly disable an IdP or disallow federation, but this setting was not being honored during the auto-linking process. This allowed an unauthenticated attacker to initiate a login using an IdP that should have been disabled for that organization. The platform would incorrectly validate the login and, based on a matching criteria, link the attacker's external identity to an existing internal user account. This may result in a full Account Takeover, bypassing the organization's mandated security controls. Note that accounts with MFA enabled can not be taken over by this attack. Also note that only IdPs create on an instance level would allow this to work. IdPs registered on another organization would always be denied in the (auto-)linking process. Versions 4.6.6, 3.4.4, and 2.71.19 resolve the issue by correctly validating the organization's login policy before auto-linking an external user. No known workarounds are available aside from upgrading.

Severity
HIGH
CVSS score
7.4 (v4.0)
Vulnerability status
Analyzed
Source identifier
[email protected]
Published
2025-11-13 16:15:56.973000
Last modified
2026-10-19 13:10:00.110000
View original CVE JSON 
{
  "id": "CVE-2025-64717",
  "sourceIdentifier": "[email protected]",
  "published": "2025-11-13T16:15:56.973",
  "lastModified": "2026-10-19T13:10:00.110",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ZITADEL is an open source identity management platform. Starting in version 2.50.0 and prior to versions 2.71.19, 3.4.4, and 4.6.6, a vulnerability in ZITADEL's federation process allowed auto-linking users from external identity providers to existing users in ZITADEL even if the corresponding IdP was not active or if the organization did not allow federated authentication. This vulnerability stems from the platform's failure to correctly check or enforce an organization's specific security settings during the authentication flow. An Organization Administrator can explicitly disable an IdP or disallow federation, but this setting was not being honored during the auto-linking process. This allowed an unauthenticated attacker to initiate a login using an IdP that should have been disabled for that organization. The platform would incorrectly validate the login and, based on a matching criteria, link the attacker's external identity to an existing internal user account. This may result in a full Account Takeover, bypassing the organization's mandated security controls. Note that accounts with MFA enabled can not be taken over by this attack. Also note that only IdPs create on an instance level would allow this to work. IdPs registered on another organization would always be denied in the (auto-)linking process. Versions 4.6.6, 3.4.4, and 2.71.19 resolve the issue by correctly validating the organization's login policy before auto-linking an external user. No known workarounds are available aside from upgrading."
    },
    {
      "lang": "es",
      "value": "ZITADEL es una plataforma de gestión de identidad de código abierto. A partir de la versión 2.50.0 y antes de las versiones 2.71.19, 3.4.4 y 4.6.6, una vulnerabilidad en el proceso de federación de ZITADEL permitía el autoenlace de usuarios de proveedores de identidad externos a usuarios existentes en ZITADEL incluso si el IdP correspondiente no estaba activo o si la organización no permitía la autenticación federada. Esta vulnerabilidad se deriva de la falla de la plataforma al verificar o aplicar correctamente las configuraciones de seguridad específicas de una organización durante el flujo de autenticación. Un Administrador de Organización puede deshabilitar explícitamente un IdP o denegar la federación, pero esta configuración no se respetaba durante el proceso de autoenlace. Esto permitía a un atacante no autenticado iniciar una sesión utilizando un IdP que debería haber estado deshabilitado para esa organización. La plataforma validaría incorrectamente el inicio de sesión y, basándose en un criterio de coincidencia, vincularía la identidad externa del atacante a una cuenta de usuario interna existente. Esto puede resultar en una Toma de Control de Cuenta completa, eludiendo los controles de seguridad obligatorios de la organización. Tenga en cuenta que las cuentas con MFA habilitado no pueden ser tomadas por este ataque. También tenga en cuenta que solo los IdP creados a nivel de instancia permitirían que esto funcionara. Los IdP registrados en otra organización siempre serían denegados en el proceso de (auto)enlace. Las versiones 4.6.6, 3.4.4 y 2.71.19 resuelven el problema al validar correctamente la política de inicio de sesión de la organización antes de autoenlazar a un usuario externo. No hay soluciones alternativas conocidas disponibles aparte de la actualización."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "zitadel",
          "product": "zitadel",
          "versions": [
            {
              "version": ">= 4.0.0-rc.1, < 4.6.6",
              "status": "affected"
            },
            {
              "version": ">= 3.0.0-rc.1, < 3.4.4",
              "status": "affected"
            },
            {
              "version": ">= 2.50.0, < 2.71.19",
              "status": "affected"
            }
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        }
      ]
    }
  ],
  "metrics": {
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        "type": "Secondary",
        "cvssData": {
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          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Primary",
        "cvssData": {
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          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
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        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-11-13T17:08:48.778483Z",
          "id": "CVE-2025-64717",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "2.71.19",
              "matchCriteriaId": "B3B611AF-52FB-49EF-9042-F4AF8DB7A21B"
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              "matchCriteriaId": "EC555BCC-5A14-4158-9CCB-569702A49890"
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  "references": [
    {
      "url": "https://github.com/zitadel/zitadel/releases/tag/v2.71.19",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
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    {
      "url": "https://github.com/zitadel/zitadel/releases/tag/v3.4.4",
      "source": "[email protected]",
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    },
    {
      "url": "https://github.com/zitadel/zitadel/releases/tag/v4.6.6",
      "source": "[email protected]",
      "tags": [
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    },
    {
      "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-j4g7-v4m4-77px",
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}