CVE-2026-49464
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
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. An authenticated user who knows or guesses another user's task ID can read its form data, overwrite its submitted data, and mark the task as completed.
Risk Assessment
Breach of confidentiality and integrity of task data in government portals may lead to unauthorized changes and disclosure of residents' personal data. This undermines trust in the system and may result in legal consequences.
Recommendation
Update the package to version 3.0.1 or later. As a workaround, block the submitTaakV2 mutation at the API gateway or restrict the /graphql endpoint to trusted networks.
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Original NVD description (English source)
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
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

