SQL injection vulnerability in the init function in class_session.php in MyBB (aka MyBulletinBoard) 1.1.5 allows remote attackers to execute arbitrary SQL commands via the CLIENT-IP HTTP header ($_SERVER['HTTP_CLIENT_IP'] variable), as utilized by index.php.

Unspecified vulnerability in MyBB (aka MyBulletinBoard) 1.1.4, related has unspecified impact and attack vectors related to "user group manipulation."

inc/init.php in Archive Mode (Light) in MyBB (aka MyBulletinBoard) 1.1.4 calls the extract function with EXTR_OVERWRITE on HTTP POST and GET variables, which allows remote attackers to overwrite arbitrary variables, as demonstrated via an SQL injection using the _SERVER[HTTP_CLIENT_IP] parameter in archive/index.php.

Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.0 RC2 through 1.1.4 allows remote attackers to inject arbitrary web script or HTML via a javascript URI with an SGML numeric character reference in the url BBCode tag, as demonstrated using "javascript".

Multiple SQL injection vulnerabilities in MyBB (aka MyBulletinBoard) 1.1.4 allow remote attackers to execute arbitrary SQL commands via unspecified vectors.

Cross-site request forgery (CSRF) vulnerability in editpost.php in MyBulletinBoard (MyBB) before 1.1.5 allows remote attackers to perform unauthorized actions as a logged in user and delete arbitrary forum posts via a bbcode IMG tag with a modified delete parameter in a deletepost action. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

SQL injection vulnerability in usercp.php in MyBB (MyBulletinBoard) 1.0 through 1.1.3 allows remote attackers to execute arbitrary SQL commands via the showcodebuttons parameter.

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.