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CVE-2026-31901

Estado: AnalizadaMedia (6.3)—

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.34 and 9.6.0-alpha.8, the email verification endpoint (/verificationEmailRequest) returns distinct error responses depending on whether an email address belongs to an existing user, is already verified, or does not exist. An attacker can send requests with different email addresses and observe the error codes to determine which email addresses are registered in the application. This is a user enumeration vulnerability that affects any Parse Server deployment with email verification enabled (verifyUserEmails: true). This vulnerability is fixed in 8.6.34 and 9.6.0-alpha.8.

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).

Tecnologías afectadas (1)

Parseplatform — Parse-server

CWE

Referencias

JSON original (NVD)

Mostrar
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      "lang": "en",
      "value": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.34 and 9.6.0-alpha.8, the email verification endpoint (/verificationEmailRequest) returns distinct error responses depending on whether an email address belongs to an existing user, is already verified, or does not exist. An attacker can send requests with different email addresses and observe the error codes to determine which email addresses are registered in the application. This is a user enumeration vulnerability that affects any Parse Server deployment with email verification enabled (verifyUserEmails: true). This vulnerability is fixed in 8.6.34 and 9.6.0-alpha.8."
    },
    {
      "lang": "es",
      "value": "Parse Server es un backend de código abierto que puede ser desplegado en cualquier infraestructura que pueda ejecutar Node.js. Antes de las versiones 8.6.34 y 9.6.0-alpha.8, el endpoint de verificación de correo electrónico (/verificationEmailRequest) devuelve respuestas de error distintas dependiendo de si una dirección de correo electrónico pertenece a un usuario existente, ya está verificada o no existe. Un atacante puede enviar solicitudes con diferentes direcciones de correo electrónico y observar los códigos de error para determinar qué direcciones de correo electrónico están registradas en la aplicación. Esta es una vulnerabilidad de enumeración de usuarios que afecta a cualquier despliegue de Parse Server con la verificación de correo electrónico habilitada (verifyUserEmails: true). Esta vulnerabilidad está corregida en las versiones 8.6.34 y 9.6.0-alpha.8."
    }
  ],
  "lastModified": "2026-06-17T10:34:43.603",
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