CVE-2026-44736

Summary

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.

Affected Software

Weaknesses

• CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
• CWE-639: CWE-639: Authorization Bypass Through User-Controlled Key
• CWE-836: CWE-836: Use of Password Hash Instead of Password for Authentication

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645

References

• https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645

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