CVE-2026-44735 Details
Description
OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the GET /api/v3/shares endpoint returns share details for ALL work packages in a project to any user with the view_shared_work_packages permission. The authorization check operates at the project level only — it does not verify the requesting user can actually view each individual shared work package. This allows a regular project member to discover work package IDs and subjects (including confidential titles), which users have been granted shared access, what role level was assigned (Editor, Commenter, Viewer). This vulnerability is fixed in 17.3.2 and 17.4.0.
A vulnerability exists in OpenProject versions prior to 17.3.2 and 17.4.0, where the GET /api/v3/shares endpoint improperly discloses share details for all work packages within a project. This information is available to any user with the view_shared_work_packages permission. The flaw arises because the authorization check is only applied at the project level, failing to verify if the user can view each specific shared work package. As a result, a regular project member can access work package IDs, subjects (including confidential titles), details about which users have shared access, and the assigned role levels (Editor, Commenter, Viewer).
Users should update to OpenProject versions 17.3.2 or 17.4.0, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 26, 2026CISA-ADP
Assessed Jun 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/opf/openproject/security/advisories/GHSA-cfg3-f34w-9xx5 | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenProject | <= 17.3.1 (semver) < 17.4.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 29, 2026 | CVE Modified | CISA-ADP |
| Jun 26, 2026 | New CVE Received | [email protected] |