SQL injection vulnerability in register.php for Phorum 3.4.5 and earlier allows remote attackers to execute arbitrary SQL commands via the hide_email parameter.
Unspecified vulnerability in Phorum 3.4 through 3.4.2 allows remote attackers to use Phorum as a connection proxy to other sites via (1) register.php or (2) login.php.
Multiple cross-site scripting (XSS) vulnerabilities in (1) login.php, (2) register.php, (3) post.php, and (4) common.php in Phorum before 3.4.3 allow remote attackers to inject arbitrary web script or HTML via unknown attack vectors.
Phorum 3.4 through 3.4.2 allows remote attackers to obtain the full path of the web server via an incorrect HTTP request to (1) smileys.php, (2) quick_listrss.php, (3) purge.php, (4) news.php, (5) memberlist.php, (6) forum_listrss.php, (7) forum_list_rdf.php, (8) forum_list.php, or (9) move.php, which leaks the information in an error message.
Multiple "command injection" vulnerabilities in Phorum 3.4 through 3.4.2 allow remote attackers to execute arbitrary commands and modify the Phorum configuration files via the (1) UserAdmin program, (2) Edit user profile, or (3) stats program.
Cross-site scripting (XSS) vulnerability in Phorum before 3.4.3 allows remote attackers to inject arbitrary web script and HTML tags via a message with a "<<" before a tag name in the (1) subject, (2) author's name, or (3) author's e-mail.
Cross-site scripting (XSS) vulnerability in read.php in Phorum 3.3.2a allows remote attackers to inject arbitrary web script or HTML via (1) the t parameter or (2) the body of an email response.
Phorum 3.3.2a allows remote attackers to execute arbitrary commands via an HTTP request to (1) plugin.php, (2) admin.php, or (3) del.php that modifies the PHORUM[settings_dir] variable to point to a directory that contains a PHP file with the commands.
Phorum 3.3.2 allows remote attackers to determine the email addresses of the 10 most active users via a direct HTTP request to the stats.php program, which does not require authentication.