Auth bypass in Opf Openproject

CVE-2026-67527

OpenProject is open-source, web-based project management software. Prior to 17.6.0, PATCH /api/v3/work_packages/{id} accepted _links.fileLinks and allowed authenticated users with edit_work_packages but without manage_file_links to resolve…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-67527?
CVE-2026-67527 is a high-severity vulnerability in Opf Openproject, classified under Missing Authorization. CVSS score: 7.6/10. Published 2026-07-30.
How severe is CVE-2026-67527?
High severity. CVSS v3 base score is 7.6 out of 10.