CVE-2026-52782

critical · 9.9

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.

9.9

CVSS

0.5%

EPSS (exploit prob.)

39th

EPSS percentile

2026-06-26

Published

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

Weaknesses

CWE-639

References

https://github.com/opf/openproject/security/advisories/GHSA-3vpx-94qx-xpw6

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-52782