CVE-2026-54683Public exploitNetwork attack vectorHinoki check available

Document disclosure via missing per-document authorization

Published Oct 15, 2026 · Updated Oct 15, 2026

Authorization bypass in NL Portal Backend Libraries before 3.0.3 allows remote authenticated users to read other users' documents. The getDocumentContent GraphQL query and GET /api/documentapi/{documentapi}/document/{documentId}/content REST route return content without checking the caller's ownership or authorized relationship. Exploitation requires a valid login and a target document identifier, which is random and difficult to guess but can leak through other channels; disclosed documents can contain sensitive personal information.

CVSS severity6.5
Medium
EPSS probability0.33%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in NL Portal Backend Libraries before 3.0.3 allows remote authenticated users to read other users' documents. The getDocumentContent GraphQL query and GET /api/documentapi/{documentapi}/document/{documentId}/content REST route return content without checking the caller's ownership or authorized relationship. Exploitation requires a valid login and a target document identifier, which is random and difficult to guess but can leak through other channels; disclosed documents can contain sensitive personal information.

The record

CVE
CVE-2026-54683
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
NL Portal
Product
NL Portal Backend Libraries
Classifications
CWE-639, CWE-285, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=< 3.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NL Portal · NL Portal Backend Librariesversion=< 3.0.3

Published CVSS scores

6.5GitHub CNACVSS: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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-285Improper Authorization
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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