Cross-site Scripting (XSS)

MantisBT is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to improper output encoding of user-supplied parameters in /admin/install.php, which allows an attacker to inject malicious HTML that can be used for credential phishing or open redirect attacks...

PT-2026-60368

MantisBT 2.28.3 and earlier contains six reflected XSS injection points in /admin/install.php. User-supplied parameters are echoed into HTML without escaping via an unescaped printf format string. No authentication is required. A Content Security Policy script-src 'self' prevents inline JavaScrip...