Daylight Studio FuelCMS v1.5.2 was discovered to contain an authenticated remote code execution (RCE) vulnerability via the /controllers/Installer.php and the function add_git_submodule.
https://pentest-tools.com/PTT-2025-028-Authenticated-RCE-via-Git-Submodules.pdf
https://github.com/daylightstudio/FUEL-CMS/blob/master/fuel/modules/fuel/controllers/Installer.php