Information Disclosure in OpenProject Software by OpenProject Foundation
CVE-2026-44736

6.5MEDIUM

Key Information:

Vendor

Opf

Status
Openproject
Vendor
CVE Published:
26 June 2026

What is CVE-2026-44736?

OpenProject, a widely used open-source project management tool, has a vulnerability in the GET /api/v3/relations endpoint that exposes sensitive information. Authenticated users can exploit this weakness to access relations and titles of work packages they are not authorized to see by manipulating the work package ID through filters such as involved, fromId, or toId. This issue arises from a flawed performance optimization in the RelationQuery, which bypasses the intended visibility restrictions. The vulnerability has been addressed in version 17.4.0.

Affected Version(s)

openproject < 17.4.0

References

https://github.com/opf/openproject/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.