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CVE Watch11 sept 2026

CVE-2026-49464

NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and

CVSS

8.1

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 11 sept 2026 · Última mod.: 11 sept 2026 · CWE-639

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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

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