NL Portal: Missing per-user authorization on document and decision GraphQL queries in nl-portal-backend-libraries

CVE-2026-49463

What is CVE-2026-49463?

NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and partner organizations. The nl.nl-portal:documenten-api package through version 3.0.0 and the nl.nl-portal:besluiten package from version 1.5.0 through 3.0.0 lack per-user authorization in GraphQL resolvers, allowing an authenticated user to access other users’ document contents, decisions, audit trails, and decision attachments. Version 3.0.1 contains a patch. As a workaround, block the affected document-content and decision-related GraphQL operations at the API gateway or block their GraphQL types entirely.

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