CVE-2026-67527
OpenProject: Improper Access Control through /api/v3/work_packages/<X.id> via PATCH parameter "fileLinks"
CVSS Score
7.6
EPSS Score
0.0%
EPSS Percentile
0th
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 Storages::FileLink records by raw id, detach or hard-delete existing FileLinks, and re-parent FileLinks from other projects to an attacker-controlled work package, exposing origin filename, origin id, and MIME type metadata. This issue is fixed in 17.6.0.
| CWE | CWE-862 |
| Vendor | opf |
| Product | openproject |
| Published | Jul 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Affected Versions
opf / openproject
< 17.6.0
References
github.com: https://github.com/opf/openproject/security/advisories/GHSA-c6rc-4288-8p4f github.com: https://github.com/opf/openproject/pull/23815 github.com: https://github.com/opf/openproject/commit/db480bdeb8802e3d33e4448bb4e4b56a01de2e1f github.com: https://github.com/opf/openproject/releases/tag/v17.6.0