reNgine is an automated reconnaissance framework for web applications. In affected versions a user can inject commands via the nmap_cmd parameters. This issue has been addressed in commit c28e5c8d and is expected in the next versioned release. Users are advised to filter user input and monitor the project for a new release.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.