Home

Description

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through /projects/<A>/settings/project_storages/<A_ps_id> via PATCH parameter "storages_project_storage[project_folder_id]" leads to Access to Unauthorized Resources. A project-admin in one project can hijack the managed Nextcloud or OneDrive folder of another project on the same storage by writing the victim project's project_folder_id into the attacker's Storages::ProjectStorage row. The next managed-folder sync overwrites the ACL on the referenced folder with the attacker project's user list. This vulnerability is fixed in 17.3.3 and 17.4.1.

PUBLISHED Reserved 2026-06-08 | Published 2026-06-26 | Updated 2026-06-26 | Assigner GitHub_M




CRITICAL: 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-639: Authorization Bypass Through User-Controlled Key

Product status

< 17.3.3
affected

>= 17.4.0, < 17.4.1
affected

References

github.com/...roject/security/advisories/GHSA-3vpx-94qx-xpw6

cve.org (CVE-2026-52782)

nvd.nist.gov (CVE-2026-52782)

Download JSON