23 Oct 2026 15:48:27 UTC
NL Portal: IDOR allows any authenticated user to complete and tamper with another user's taak
cve-program · CVE-2026-49464 · Published
CVE-2026-49464
NL Portal: IDOR allows any authenticated user to complete and tamper with another user's taak
CVSS 3.1 8.1 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-49464
PublishedNL 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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