CVE-2026-67528: CWE-863: Incorrect Authorization in opf openproject
OpenProject versions prior to 17.6.0 contain an authorization flaw where authenticated non-admin users can enumerate sequential custom option IDs and access labels of admin-only user or group custom fields. This issue is resolved in version 17.6.0.
AI Analysis
Technical Summary
CVE-2026-67528 describes an incorrect authorization vulnerability (CWE-863) in OpenProject, an open-source web-based project management software. Before version 17.6.0, the GET /api/v3/custom_options/:id endpoint resolved CustomOption records by a global numeric ID without verifying visibility permissions for the current user. This allowed authenticated non-admin users to enumerate sequential custom option IDs and read labels associated with admin-only user or group custom fields. The vulnerability is fixed in OpenProject 17.6.0.
Potential Impact
The vulnerability allows authenticated non-admin users to bypass intended visibility restrictions and read labels of custom options that should be restricted to admin users or groups. This results in unauthorized disclosure of potentially sensitive configuration data. There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade OpenProject to version 17.6.0 or later, where this authorization issue has been fixed. Patch status is not explicitly stated, but the vendor has fixed the issue in 17.6.0. No additional mitigation is indicated.
CVE-2026-67528: CWE-863: Incorrect Authorization in opf openproject
Description
OpenProject versions prior to 17.6.0 contain an authorization flaw where authenticated non-admin users can enumerate sequential custom option IDs and access labels of admin-only user or group custom fields. This issue is resolved in version 17.6.0.
CVSS v3.1
Score 4.3medium
Affected software
opf
openproject
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-67528 describes an incorrect authorization vulnerability (CWE-863) in OpenProject, an open-source web-based project management software. Before version 17.6.0, the GET /api/v3/custom_options/:id endpoint resolved CustomOption records by a global numeric ID without verifying visibility permissions for the current user. This allowed authenticated non-admin users to enumerate sequential custom option IDs and read labels associated with admin-only user or group custom fields. The vulnerability is fixed in OpenProject 17.6.0.
Potential Impact
The vulnerability allows authenticated non-admin users to bypass intended visibility restrictions and read labels of custom options that should be restricted to admin users or groups. This results in unauthorized disclosure of potentially sensitive configuration data. There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade OpenProject to version 17.6.0 or later, where this authorization issue has been fixed. Patch status is not explicitly stated, but the vendor has fixed the issue in 17.6.0. No additional mitigation is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-29T18:47:17.073Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6ba8439c2644c7f892a6e1
Added to database: 07/30/2026, 19:38:43 UTC
Last enriched: 08/07/2026, 14:32:25 UTC
Last updated: 09/12/2026, 10:01:32 UTC
Views: 61
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