NL Portal Backend Libraries: Document contents remained downloadable by any logged-in user until 3.0.3 (incomplete fix of CVE-2026-49463)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54683
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 18:17:27 UTC
Updated2026-10-16 20:04:29 UTC
DescriptionNL 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.003330000 probability, percentile 0.249320000 (date 2026-10-16)

Problem Types: CWE-285 | CWE-639 | CWE-285 CWE-285: Improper Authorization | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nl-portal Nl-portal-backend-libraries affected < 3.0.3 Not specified

References

ReferenceSourceLinkTags
github.com/nl-portal/nl-portal-backend-libraries/commit/6e738a876ff9f581... [email protected] github.com
github.com/nl-portal/nl-portal-backend-libraries/security/advisories/GHS... [email protected] github.com
github.com/nl-portal/nl-portal-backend-libraries/pull/690 [email protected] github.com
github.com/nl-portal/nl-portal-backend-libraries/releases/tag/3.0.3.RELEASE [email protected] github.com
github.com/nl-portal/nl-portal-backend-libraries/pull/684 [email protected] github.com
github.com/nl-portal/nl-portal-backend-libraries/commit/e326e6db862f71f7... [email protected] github.com
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