CVE-2026-9136

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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. 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This has been fixed in MISP 2.5.38."}, {"lang": "es", "value": "Una vulnerabilidad fue identificada en el flujo de trabajo de creaci\u00f3n de propuestas de ShadowAttribute. La acci\u00f3n de a\u00f1adir 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 instrucci\u00f3n para actualizar un registro existente, un usuario autenticado capaz de enviar propuestas de atributos sombra podr\u00eda 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 modificaci\u00f3n no autorizada de atributos sombra existentes, afectando potencialmente propuestas asociadas con eventos que el usuario no deber\u00eda poder alterar. Dependiendo de la configuraci\u00f3n de despliegue y las respuestas de la API accesibles, el problema tambi\u00e9n 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 creaci\u00f3n de objetos. La soluci\u00f3n 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. 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