Vulnerabilidad · Publicado 11/09/2026 · Actualizado 12/09/2026
El paquete `nl.nl-portal:taak` (versiones 1.5.0 a 3.0.0) no valida correctamente la propiedad de tareas en la mutación GraphQL `submitTaakV2`, permitiendo a usuarios autenticados leer formularios de otros usuarios si conocen o adivinan su ID de tarea. Esta vulnerabilidad afecta sistemas de gobierno digital en portales de atención ciudadana que procesan información sensible de residentes, clientes y proveedores.
NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and partner organizations. The `nl.nl-portal:taak` package from version 1.5.0 through 3.0.0 fails to verify ownership when processing the `submitTaakV2` GraphQL mutation, allowing an authenticated user who knows or guesses another user’s task ID to read its form data, overwrite its submitted data, and mark the task as completed. Version 3.0.1 contains a patch. As a workaround, block the `submitTaakV2` mutation at the API gateway or restrict the `/graphql` endpoint to trusted networks
Score: 8.1/10 — Severidad: HIGH — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-639
Publicado en NIST NVD.