Description
NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and partner organizations. Prior to 3.0.3, both the getDocumentContent GraphQL query and GET /api/documentapi/{documentapi}/document/{documentId}/content REST route allow any authenticated portal user to retrieve a document without checking ownership of or another authorized relationship to it. A user with a valid login and another person's document identifier can read that document's contents, which may include sensitive personal information. Document identifiers are random and difficult to guess, but they can leak through other channels. This issue is fixed in version 3.0.3.
References7
- github.com/nl-portal/nl-portal-backend-libraries/commit/6e738a8…
- github.com/nl-portal/nl-portal-backend-libraries/commit/e326e6d…
- github.com/nl-portal/nl-portal-backend-libraries/pull/684
- github.com/nl-portal/nl-portal-backend-libraries/pull/690
- github.com/nl-portal/nl-portal-backend-libraries/releases/tag/3…
- github.com/nl-portal/nl-portal-backend-libraries/security/advis…
- github.com/nl-portal/nl-portal-backend-libraries/security/advis…
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 37 · as of 10 November 2026
- CWE
- CWE-285CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.