CVE-2026-49463— NL Portal: Missing per-user authorization on document and decision GraphQL queries in nl-portal-backend-libraries
Quick assessment
Affected
nl-portal nl.nl-portal:besluiten
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
NL Portal 后端库（NL Portal Backend Libraries）为荷兰政府门户提供后端组件，这些门户用于与居民、客户、供应商和合作伙伴组织进行交互。在版本 3.0.0 及之前版本的 包，以及从版本 1.5.0 到 3.0.0 的 包中，GraphQL 解析器（resolvers）缺少基于用户的权限控制（per-user authorization），这使得已认证的用户能够访问其他用户的文档内容、决议、审计轨迹（audit trails）和决议附件。版本 3.0.1 包含了修复补丁。作为临时解决方
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| nl-portal | nl.nl-portal:besluiten | >= 1.5.0, < 3.0.1 |
affected |
| nl-portal | nl.nl-portal:documenten-api | < 3.0.1 |
affected |
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I. Basic Information for CVE-2026-49463
Vulnerability Information
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Vulnerability Title
NL Portal: Missing per-user authorization on document and decision GraphQL queries in nl-portal-backend-libraries
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nl-portal | nl.nl-portal:besluiten | >= 1.5.0, < 3.0.1 | - |
|
| nl-portal | nl.nl-portal:documenten-api | < 3.0.1 | - |
|
II. Public POCs for CVE-2026-49463
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-49463 (1)
Same Patch Batch · nl-portal · 2026-09-11 · 3 CVEs total
| CVE-2026-49464 | 8.1 HIGH | NL Portal: IDOR allows any authenticated user to complete and tamper with another user's t |
| CVE-2026-49462 | 5.3 MEDIUM | nl.nl-portal:app has GraphiQL UI and GraphQL schema introspection enabled by default |
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