Multiple cross-site scripting (XSS) vulnerabilities in Phorum 5.0.17a and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the username parameter to register.php or (2) a signature of a logged-in user in "My Control Center," which is not properly handled by control.php.
SQL injection vulnerability in follow.php in Phorum 5.0.12 and earlier allows remote authenticated users to execute arbitrary SQL command via the forum_id parameter.
Multiple SQL injection vulnerabilities in Phorum 5.0.11 and earlier allow remote attackers to modify SQL statements via (1) the query string in read.php or (2) unknown vectors in file.php.
Cross-site scripting (XSS) vulnerability in Phorum 5.0.11 and earlier allows remote attackers to inject arbitrary HTML or web script via search.php. NOTE: some sources have reported that the affected file is read.php, but this is inconsistent with the vendor's patch.