register.cgi in Ikonboard 2.1.7b and earlier allows remote attackers to execute arbitrary commands via the SEND_MAIL parameter, which overwrites an internal program variable that references a program to be executed.

Directory traversal vulnerability in help.cgi in Ikonboard 2.1.7b and earlier allows a remote attacker to read arbitrary files via a .. (dot dot) attack in the helpon parameter.

Directory traversal vulnerability in Search.cgi in Ikonboard ib219 and earlier allows remote attackers to overwrite files and gain privileges via .. (dot dot) sequences in the amembernamecookie cookie.

Cross-site scripting vulnerability in Ikonboard 3.0.1 allows remote attackers to execute arbitrary script as other Ikonboard users and steal cookies via Javascript in an IMG tag.

FUNC.pm in IkonBoard 3.1.2a and earlier, including 3.1.1, does not properly cleanse the "lang" cookie when it contains illegal characters, which allows remote attackers to execute arbitrary code when the cookie is inserted into a Perl "eval" statement.

SQL injection vulnerability in ikonboard.cgi in Ikonboard 3.1.0 through 3.1.3 allows remote attackers to inject arbitrary SQL commands via the (1) st or (2) keywords parameter.