Usermin 0.980 through 1.x before 1.660 allows uconfigsave.cgi sigfilefree remote code execution because it uses the two argument (not three argument) form of Perl open.
Multiple cross-site scripting (XSS) vulnerabilities in pamlogin.cgi in Webmin before 1.350 and Usermin before 1.280 allow remote attackers to inject arbitrary web script or HTML via the (1) cid, (2) message, or (3) question parameter. NOTE: some of these details are obtained from third party information.