CVE-2026-44736
OpenProject: Relations API Filter Bypasses Visibility Scope, Leaking Cross-Project Work Package Subjects
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.
INFO
Published Date :
June 26, 2026, 7:27 p.m.
Last Modified :
June 26, 2026, 7:27 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-44736
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update OpenProject to version 17.4.0 or later.
- Restrict access to the API endpoint.
- Review user permissions for the API.
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CVE-2026-44736 vulnerability anywhere in the article.