CVE-2026-49463

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

State: Published
Severity: 6.5 Medium
Published: Sep 11, 2026
Updated: Sep 11, 2026
Reserved: May 30, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-285 Improper Authorization

Affected Products

Product	Versions
nl.nl-portal:besluitennl-portal	>= 1.5.0, < 3.0.1Affected
nl.nl-portal:documenten-apinl-portal	< 3.0.1Affected

References

https://github.com/nl-portal/nl-portal-backend-libraries/security/advisories/GHSA-qpm9-h556-mwxm

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