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CVE-2026-9136

Estado: AnalizadaAlta (8.3)—

A vulnerability was identified in the ShadowAttribute proposal creation workflow. The add action accepted user-controlled ShadowAttribute request data without removing the id field before saving the record. Because the underlying framework treats a supplied primary key as an instruction to update an existing record, an authenticated user able to submit shadow attribute proposals could provide the identifier of an existing ShadowAttribute and cause that record to be updated instead of creating a new proposal.

This can result in unauthorized modification of existing shadow attributes, potentially affecting proposals associated with events the user should not be able to alter.

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Depending on deployment configuration and accessible API responses, the issue may also expose or move proposal data across event contexts.

The vulnerability is caused by trusting a client-supplied primary key during object creation. The fix removes the id field from incoming ShadowAttribute data before processing, ensuring that the endpoint always creates a new proposal rather than updating an existing one. This has been fixed in MISP 2.5.38.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso remoto con autenticación (AV:N, PR:L) para modificar registros existentes sin autorización mediante manipulación del ID de clave primaria; potencial exposición de datos sensibles.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramRestrict File and Directory PermissionsPrivileged Account ManagementRemote Data StorageNetwork Segmentation

Tecnologías afectadas (1)

Misp-project — Misp

CWE

Referencias

JSON original (NVD)

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      "value": "A vulnerability was identified in the ShadowAttribute proposal creation workflow. The add action accepted user-controlled ShadowAttribute request data without removing the id field before saving the record. Because the underlying framework treats a supplied primary key as an instruction to update an existing record, an authenticated user able to submit shadow attribute proposals could provide the identifier of an existing ShadowAttribute and cause that record to be updated instead of creating a new proposal.\n\n\n\n\nThis can result in unauthorized modification of existing shadow attributes, potentially affecting proposals associated with events the user should not be able to alter. Depending on deployment configuration and accessible API responses, the issue may also expose or move proposal data across event contexts.\n\n\n\n\nThe vulnerability is caused by trusting a client-supplied primary key during object creation. The fix removes the id field from incoming ShadowAttribute data before processing, ensuring that the endpoint always creates a new proposal rather than updating an existing one. This has been fixed in MISP 2.5.38."
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      "lang": "es",
      "value": "Una vulnerabilidad fue identificada en el flujo de trabajo de creación de propuestas de ShadowAttribute. La acción de añadir aceptaba datos de solicitud de ShadowAttribute controlados por el usuario sin eliminar el campo 'id' antes de guardar el registro. Debido a que el framework subyacente trata una clave primaria proporcionada como una instrucción para actualizar un registro existente, un usuario autenticado capaz de enviar propuestas de atributos sombra podría proporcionar el identificador de un ShadowAttribute existente y hacer que ese registro se actualice en lugar de crear una nueva propuesta.\n\nEsto puede resultar en la modificación no autorizada de atributos sombra existentes, afectando potencialmente propuestas asociadas con eventos que el usuario no debería poder alterar. Dependiendo de la configuración de despliegue y las respuestas de la API accesibles, el problema también puede exponer o mover datos de propuestas entre contextos de eventos.\n\nLa vulnerabilidad es causada por confiar en una clave primaria proporcionada por el cliente durante la creación de objetos. La solución elimina el campo 'id' de los datos de ShadowAttribute entrantes antes de procesar, asegurando que el endpoint siempre cree una nueva propuesta en lugar de actualizar una existente. Esto ha sido corregido en MISP 2.5.38."
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  "lastModified": "2026-07-23T15:10:00.137",
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