The domecode function in inc/functions_post.php in MyBulletinBoard (MyBB) 1.1.2, and possibly other versions, allows remote attackers to execute arbitrary PHP code via the username field, which is used in a preg_replace function call with a /e (executable) modifier.

Cross-site scripting (XSS) vulnerability in private.php in MyBB 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the do parameter.

SQL injection vulnerability in rss.php in MyBB (aka MyBulletinBoard) 1.1.1 allows remote attackers to execute arbitrary SQL commands via the comma parameter. NOTE: it is not clear from the original report how this attack can succeed, since the demonstration URL uses a variable that is overwritten with static data in the extracted source code.

SQL injection vulnerability in showthread.php in MyBB (aka MyBulletinBoard) 1.1.1 allows remote attackers to execute arbitrary SQL commands via the comma parameter.

Multiple SQL injection vulnerabilities in MyBB (aka MyBulletinBoard) 1.1.1 allow remote attackers to execute arbitrary SQL commands via the e-mail address when registering for a forum that requires e-mail verification, which is not properly handled in (1) usercp.php and (2) member.php.

SQL injection vulnerability in MyBB (MyBulletinBoard) 1.1.1 allows remote authenticated administrators to execute arbitrary SQL commands via the (1) query string ($querystring variable) in (a) admin/adminlogs.php, which is not properly handled by adminfunctions.php; or (2) setid, (3) expand, (4) title, or (5) sid2 parameters to (b) admin/templates.php.

SQL injection vulnerability in index.php in MyBB (MyBulletinBoard) before 1.04 allows remote attackers to execute arbitrary SQL commands via the referrer parameter.

Cross-site scripting (XSS) vulnerability in MyBB (MyBulletinBoard) 1.1 allows remote attackers to inject arbitrary web script or HTML via the attachment content disposition in an HTML attachment.

MyBB (MyBulletinBoard) 1.1.0 does not set the constant KILL_GLOBAL variable in (1) global.php and (2) inc/init.php, which allows remote attackers to initialize arbitrary variables that are processed by an @extract command, which could then be leveraged to conduct cross-site scripting (XSS) or SQL injection attacks.

Cross-site scripting (XSS) vulnerability in newthread.php in MyBB (aka MyBulletinBoard) 1.10, when configured to permit new threads by unregistered users, allows remote attackers to inject arbitrary web script or HTML via the username.