opf openproject up to 16.6.5/17.0.1 /projects/ rev command injection

Summaryinfo

A vulnerability was found in opf openproject up to 16.6.5/17.0.1 and classified as critical. Affected by this issue is some unknown functionality of the file /projects/. Such manipulation of the argument rev leads to command injection. This vulnerability is documented as CVE-2026-24685. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in opf openproject up to 16.6.5/17.0.1 and classified as critical. Affected by this issue is an unknown code of the file /projects/. The manipulation of the argument rev with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

OpenProject is an open-source, web-based project management software. Versions prior to 16.6.6 and 17.0.2 have an arbitrary file write vulnerability in OpenProject’s repository diff download endpoint (`/projects/:project_id/repository/diff.diff`) when rendering a single revision via git show. By supplying a specially crafted rev value (for example, `rev=--output=/tmp/poc.txt)`, an attacker can inject git show command-line options. When OpenProject executes the SCM command, Git interprets the attacker-controlled rev as an option and writes the output to an attacker-chosen path. As a result, any user with the `:browse_repository` permission on the project can create or overwrite arbitrary files that the OpenProject process user is permitted to write. The written contents consist of git show output (commit metadata and patch), but overwriting application or configuration files still leads to data loss and denial of service, impacting integrity and availability. The issue has been fixed in OpenProject 17.0.2 and 16.6.6.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-24685 since 01/23/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 16.6.6 or 17.0.2 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• opf

Name

• openproject

Version

• 16.6.0
• 16.6.1
• 16.6.2
• 16.6.3
• 16.6.4
• 16.6.5
• 17.0.0
• 17.0.1

Website

• Product: https://github.com/opf/openproject/

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