pictureproxy.php in the dirk1983 mm1.ltd source code f9f4bbc allows SSRF via the url parameter. NOTE: the references section has an archived copy of pictureproxy.php from its original GitHub location, but the repository name might later change because it is misleading.
https://www.securityweek.com/chatgpt-vulnerability-exploited-against-us-government-organizations/
https://hackread.com/hackers-exploit-chatgpt-cve-2024-27564-10000-attacks/