CVE-2026-67529

OpenProject is an open-source, web-based project management software. In version 16.6.1 and below, a registered administrator can execute arbitrary commands by configuring the sendmail binary path and sending a test email. This issue has been patched in version 16.6.2.

OpenProject before 6.1.6 and 7.x before 7.0.3 mishandles session expiry, allowing remote attackers to perform APIv3 requests indefinitely by leveraging a hijacked session.

OpenProject before versions 17.3.3 and 17.4.1 contains a SQL injection vulnerability in the timestamps functionality. Attackers can exploit the timestamps parameter to execute unauthorized database queries.

In OpenProject prior to versions 17.3.3 and 17.4.1, an IDOR vulnerability exists in the endpoint /projects/<A>/settings/project_storages/<A_ps_id> via the PATCH parameter "storages_project_storage[project_folder_id]". A project administrator can hijack the managed Nextcloud or OneDrive folder of another project on the same storage, leading to unauthorized resource access.

The official openproject/openproject Docker image ships with a default SECRET_KEY_BASE=OVERWRITE_ME, which combined with cookies_serializer = :marshal allows any logged-in user a deterministic Marshal-deserialization path via the /my/two_factor_devices cookie reader. This vulnerability is fixed in a later version.

OpenProject prior to version 17.2.3 has an SQL injection vulnerability in the =n operator in modules/reporting/lib/report/operator.rb:177. This operator embeds user input directly into SQL WHERE clauses without parameterization.

OpenProject before version 16.6.4 contains a Local File Read vulnerability in the work package PDF export. By uploading a specially crafted SVG file (disguised as PNG) as an attachment, an attacker can exploit the ImageMagick engine to read arbitrary local files accessible to the application user.

OpenProject is open-source, web-based project management software. In version 17.5.1 and earlier, an authenticated non-admin project member can request the inplace-edit dialog for a raw custom_field_ project attribute. The dialog path resolves the project custom field by its raw identifier without enforcing the normal admin_only visibility scope and renders the stored custom-field comment in read-only mode. This discloses hidden comment text but does not disclose the custom-field value or permit writes or mutation. This issue is reported as fixed in version 17.6.0.

OpenProject before 17.6.0 in GET /api/v3/custom_options/:id resolved custom options by global numeric ID without visibility checks. Authenticated non-admin users could enumerate IDs and read labels of admin-only options.

In OpenProject prior to version 17.6.0, the PATCH /api/v3/work_packages/{id} endpoint accepts _links.fileLinks and allows 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.