edituser.php3 in PHPMyChat 0.14.5 allow remote attackers to bypass authentication and gain administrative privileges by setting the do_not_login parameter to false.

Multiple SQL injection vulnerabilities in usersL.php3 in PHPMyChat 0.14.5 allow remote attackers to execute arbitrary SQL commands via the (1) sortBy, (2) sortOrder, (3) startReg, (4) U, (5) LastCheck , and (6) R parameters.

Multiple directory traversal vulnerabilities in admin.php3 in PHPMyChat 0.14.5 allow remote attackers with administrative privileges to read arbitrary files via a .. (dot dot) in the (1) sheet and (2) What parameters.

PHPMyChat 0.14.5 does not remove or protect setup.php3 after installation, which allows attackers to obtain sensitive information including database passwords via a direct request.

Multiple cross-site scripting (XSS) vulnerabilities in PHPMyChat 0.14.5 allow remote attackers to inject arbitrary web script or HTML via the (1) LIMIT parameter to chat/deluser.php3, the (2) Link parameter to chat/edituser.php3, or the (3) LastCheck or (4) B parameter to chat/users_popupL.php3. NOTE: the FontName vectors for start_page.css.php3 and style.css.php3 are already covered by CVE-2005-1619. The medium vectors for start_page.css.php3 (start_page.css.php) and style.css.php3 (style.css.php), and the From vector for users_popupL.php3 (users_popupL.php), are already covered by CVE-2005-3991.