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CVE-2026-49462— nl.nl-portal:app has GraphiQL UI and GraphQL schema introspection enabled by default

Quick assessment

Affected
nl-portal nl.nl-portal:app
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.

以下是该漏洞描述的中文翻译： NL Portal 后端库为与居民、客户、供应商及合作伙伴机构互动的荷兰政府门户网站提供后端组件。在 3.0.0 及更早版本中，使用默认配置部署的实例在未要求身份验证的情况下暴露了两个 GraphQL 开发者功能：一是 GraphiQL 互动界面（用于发起 GraphQL 查询的交互式 UI）；二是模式自省（schema introspection），允许调用者下载 API 所支持的所有查询、变更、类型及参数的完整描述。任何能够访问 端点的人都可以打开该互动界面，获取完整的 API 结

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-49462

Vulnerability Information
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Vulnerability Title
nl.nl-portal:app has GraphiQL UI and GraphQL schema introspection enabled by default
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. In versions up to and including 3.0.0, deployments using the shipped default configuration exposed two GraphQL developer features without requiring authentication: the GraphiQL playground, an interactive UI for issuing GraphQL queries; and schema introspection, which lets a caller download the full description of every query, mutation, type, and argument the API supports. Anyone who could reach the `/graphiql` endpoint could open the playground in a browser, pull the full schema, and use that to map out the API and craft calls against it. By itself this does not leak user data, but it removes the guesswork from attacking the rest of the API and significantly lowers the bar for finding and exploiting other weaknesses. Version 3.0.1 patches the issue. As a workaround, override the two settings in deployed configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:app < 3.0.1 -

II. Public POCs for CVE-2026-49462

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III. Intelligence Information for CVE-2026-49462

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Other References for CVE-2026-49462 (2)

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-2026-49463 6.5 MEDIUM NL Portal: Missing per-user authorization on document and decision GraphQL queries in nl-p

IV. Related Vulnerabilities

Same vendor: nl-portal
Same weakness: CWE-200

V. Comments for CVE-2026-49462

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