Mantis is a web-based bugtracking system written in PHP.
Mantis fails to properly sanitize untrusted input before using it. This leads to an SQL injection and several cross-site scripting vulnerabilities.
An attacker could possibly use the SQL injection vulnerability to access or modify information from the Mantis database. Furthermore the cross-site scripting issues give an attacker the ability to inject and execute malicious script code or to steal cookie-based authentication credentials, potentially compromising the victim's browser.
There is no known workaround at this time.
All Mantis users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/mantisbt-0.19.2"