CVE-2026-49463Public exploitNetwork attack vectorHinoki check available

Cross-user data disclosure via unscoped GraphQL resolvers

Published Sep 11, 2026 · Updated Sep 11, 2026

Improper authorization in NL Portal backend modules through 3.0.0 allows remote authenticated users to read other users' portal records. The affected GraphQL resolvers omit the CommonGroundAuthentication parameter, so the framework binds no principal and the queries apply no ownership scope. A valid portal account reaches decision searches, audit trails, attachments, and document content, enabling cross-user disclosure of sensitive records.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authorization in NL Portal backend modules through 3.0.0 allows remote authenticated users to read other users' portal records. The affected GraphQL resolvers omit the CommonGroundAuthentication parameter, so the framework binds no principal and the queries apply no ownership scope. A valid portal account reaches decision searches, audit trails, attachments, and document content, enabling cross-user disclosure of sensitive records.

The record

CVE
CVE-2026-49463
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
NL Portal
Product
Besluiten
Classifications
CWE-200, CWE-285, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.5.0, < 3.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NL Portal · Besluitenversion=>= 1.5.0, < 3.0.1
NL Portal · Documenten API Moduleversion=< 3.0.1

Published CVSS scores

6.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-285Improper Authorization
T1213Data from Information Repositories

Public exploit references

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Technologies

Your stack

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Your stack

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