Cross-site scripting (XSS) vulnerability in gnatsweb.pl in Gnatsweb 4.00 and Gnats 4.1.99 allows remote attackers to inject arbitrary web script or HTML via the database parameter.
gnatsweb.pl in GNATS GnatsWeb 2.7 through 3.95 allows remote attackers to execute arbitrary commands via certain characters in the help_file parameter.