CVE-2020-35754
OpenSolution Quick.CMS < 6.7 and Quick.Cart < 6.7 allow an authenticated user to perform code injection (and consequently Remote Code Execution) via the input fields of the Language tab. Date published : 2021-01-28 https://opensolution.org/security-fix-for-cart-and-cms%21-en-1136.html
http://packetstormsecurity.com/files/161189/Quick.CMS-6.7-Remote-Code-Execution.html