CVE-2026-54657

Published: Ott 16, 2026 Last Modified: Ott 16, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none

Description

AI Translation Available

Open Zaak is an open-source data and services layer for Dutch case-oriented working. From 1.0.0 until 1.27.2, 1.28.2, and 1.29.0, the POST search endpoints /zaken/api/v1/zaken/_zoek and /documenten/api/v1/enkelvoudiginformatieobjecten/_zoek do not filter result querysets according to the authorizations associated with the request token. A caller with a valid zaken.lezen or documenten.lezen token can therefore retrieve case or document metadata outside the token's authorized types or confidentiality levels. Document searches require known UUIDs, and document content remains protected by separate download authorization. This issue is fixed in versions 1.27.2, 1.28.2, and 1.29.0.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0026
Percentile
0,2th
Updated

EPSS Score Trend (Last 3 Days)

285

Improper Authorization

Draft
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: Not Technology-Specific, Web Server, Database Server
View CWE Details
639

Authorization Bypass Through User-Controlled Key

Incomplete
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/open-zaak/open-zaak/commit/15456f1a0ef4b0abf1b1c0e3a16c99c15…
https://github.com/open-zaak/open-zaak/commit/4b429d3243d1532f6fe731f932a201cf0…
https://github.com/open-zaak/open-zaak/commit/d3869af98c60570782f867bab3e1d14fd…
https://github.com/open-zaak/open-zaak/releases/tag/1.27.2
https://github.com/open-zaak/open-zaak/releases/tag/1.28.2
https://github.com/open-zaak/open-zaak/releases/tag/1.29.0
https://github.com/open-zaak/open-zaak/security/advisories/GHSA-f29q-7rpr-jmjx