Cross-site scripting (XSS) vulnerability in Phorum before 5.2.10 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Phorum before 5.2.15 allows remote attackers to inject arbitrary web script or HTML via an invalid email address.

violation.php3 in Phorum 3.0.7 allows remote attackers to send e-mails to arbitrary addresses and possibly use Phorum as a "spam proxy" by setting the Mod and ForumName parameters.

Backdoor in auth.php3 in Phorum 3.0.7 allows remote attackers to access restricted web pages via an HTTP request with the PHPAUTHUSER parameter set to "boogieman".

SQL injection vulnerability in read.php3 and other scripts in Phorum 3.0.7 allows remote attackers to execute arbitrary SQL queries via the sSQL parameter.

Phorum 3.0.7 allows remote attackers to change the administrator password without authentication via an HTTP request for admin.php3 that sets step, option, confirm and newPssword variables.

Directory traversal vulnerability in pm.php in Phorum 5 allows remote authenticated users to include and execute arbitrary local files via directory traversal sequences in the GLOBALS[template] parameter, as demonstrated by injecting PHP sequences into a log file, which is then included by pm.php.