CVE-2026-44736: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in opf openproject
OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0.
AI Analysis
Technical Summary
CVE-2026-44736 is an information exposure vulnerability in OpenProject, an open-source project management software. Before version 17.4.0, the GET /api/v3/relations endpoint improperly allows authenticated users to retrieve relations and the subject titles of work packages without proper permission checks. This is caused by a flawed performance optimization in RelationQuery that bypasses the Relation.visible scope, leading to unauthorized disclosure of sensitive information. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity impact. The issue is resolved in OpenProject version 17.4.0.
Potential Impact
An authenticated user can retrieve the titles of work packages they are not authorized to view by exploiting the GET /api/v3/relations endpoint. This results in unauthorized exposure of sensitive project information (confidential work package titles). There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade OpenProject to version 17.4.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
CVE-2026-44736: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in opf openproject
Description
OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0.
CVSS v3.1
Score 6.5medium
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44736 is an information exposure vulnerability in OpenProject, an open-source project management software. Before version 17.4.0, the GET /api/v3/relations endpoint improperly allows authenticated users to retrieve relations and the subject titles of work packages without proper permission checks. This is caused by a flawed performance optimization in RelationQuery that bypasses the Relation.visible scope, leading to unauthorized disclosure of sensitive information. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity impact. The issue is resolved in OpenProject version 17.4.0.
Potential Impact
An authenticated user can retrieve the titles of work packages they are not authorized to view by exploiting the GET /api/v3/relations endpoint. This results in unauthorized exposure of sensitive project information (confidential work package titles). There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade OpenProject to version 17.4.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-07T18:04:17.309Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3edc0372d29f1837f464aa
Added to database: 06/26/2026, 20:07:31 UTC
Last enriched: 07/03/2026, 22:35:23 UTC
Last updated: 08/09/2026, 12:41:10 UTC
Views: 77
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