HIGH 8.1 NVD

CVE-2026-49464

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

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

References

https://github.com/nl-portal/nl-portal-backend-libraries/security/advisories/GHSA-6h3c-r72

Published: 2026-09-11 · Source: NVD · Feed updated: 2026-09-11

This high severity vulnerability with a CVSS score of 8.1 was published on 2026-09-11 via NVD.

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