phpBB version 3.2.7 allows the stealing of an Administration Control Panel session id by leveraging CSRF in the Remote Avatar feature. The CSRF Token Hijacking leads to stored XSS
Server side request forgery (SSRF) in phpBB before 3.2.6 allows checking for the existence of files and services on the local network of the host through the remote avatar upload function.
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.
phpBB version 3.2.0 is vulnerable to SSRF in the Remote Avatar function resulting allowing an attacker to perform port scanning, requesting internal content and potentially attacking such internal services via the web application.
Open redirect vulnerability in phpBB before 3.0.14 and 3.1.x before 3.1.4 allows remote attackers to redirect users of Google Chrome to arbitrary web sites and conduct phishing attacks via unspecified vectors.
The message_options function in includes/ucp/ucp_pm_options.php in phpBB before 3.0.13 does not properly validate the form key, which allows remote attackers to conduct CSRF attacks and change the full folder setting via unspecified vectors.
Cross-site scripting (XSS) vulnerability in includes/startup.php in phpBB before 3.0.13 allows remote attackers to inject arbitrary web script or HTML via vectors related to "Relative Path Overwrite."
Unspecified vulnerability in posting.php in phpBB before 3.0.5 has unknown impact and attack vectors related to the use of a "forum id" in circumstances related to a "global announcement."
feed.php in phpBB 3.0.7 before 3.0.7-PL1 does not properly check permissions for feeds, which allows remote attackers to bypass intended access restrictions via unspecified attack vectors related to permission settings on a private forum.