PT-2026-52913 · Undefined · Undefined

Published 2026-06-26 · Updated 2026-06-26 · CVE-2026-52782

NVD

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through /projects//settings/project storages/ 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.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-52782

Affected Products

Undefined

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-52782 · Security Note
• https://github.com/opf/openproject/security/advisories/GHSA-3vpx-94qx-xpw6 · Note