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.
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 insert…
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.
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.