Cross-site scripting (XSS) vulnerability in control.php in the controlcenter in Phorum before 5.2.17 allows remote attackers to inject arbitrary web script or HTML via the real_name parameter.

Cross-site scripting (XSS) vulnerability in Phorum before 5.2.16 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site request forgery (CSRF) vulnerability in Phorum before 5.2.16 allows remote attackers to hijack the authentication of unspecified victims via unknown 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.

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

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.

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.

Phorum allows remote attackers to hijack sessions of other users by stealing and replaying the session hash in the phorum_uriauth parameter, as demonstrated using profile.php. NOTE: the affected version was reported to be 4.3.7, but this may be erroneous.