Unspecified vulnerability in phpBB before 3.0.4 allows attackers to bypass intended access restrictions and activate de-activated accounts via unknown vectors.

PHP remote file inclusion vulnerability in includes/usercp_register.php in phpBB 2.0.19 allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter. NOTE: this issue has been disputed by third-party researchers, stating that the file checks for a global constant and cannot be accessed directly

Unspecified vulnerability in phpBB before 2.0.22 has unknown impact and remote attack vectors related to "criteria for 'bad' redirection targets."

Certain forms in phpBB before 2.0.22 lack session checks, which has unknown impact and remote attack vectors.

Unspecified vulnerability in phpBB before 2.0.22 has unknown impact and remote attack vectors related to a "negative start parameter."

Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated users to inject arbitrary web script or HTML via the "Message body" field in a message to a non-existent user.

PHP remote file inclusion vulnerability in admin/admin_topic_action_logging.php in Admin Topic Action Logging Mod 0.95 and earlier, as used in phpBB 2.0 up to 2.0.21, allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.

PHP remote file inclusion vulnerability in template.php in phpBB 2 allows remote attackers to execute arbitrary PHP code via a URL in the page parameter. NOTE: followup posts have disputed this issue, stating that template.php does not appear in phpBB and does not use a $page variable. It is possible that this is a site-specific vulnerability, or an issue in a mod

PHP remote file inclusion vulnerability in /includes/kb_constants.php in Knowledge Base Mod for PHPbb 2.0.2 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the module_root_path parameter.

Multiple cross-site scripting (XSS) vulnerabilities in phpBB 2.0.19 allow remote attackers to inject arbitrary web script or HTML via the (1) Site Description field in (a) admin_board.php, the (2) Group name and (3) Group description fields in (b) admin_groups.php and (c) groupcp.php, the (4) Theme Name field in (d) admin_styles.php, and the (5) Rank Title field in (e) admin_ranks.php. NOTE: the profile.php/Current password vector is already covered by CVE-2006-1603.