Cross-site scripting (XSS) vulnerability in the quick edit function in xmlhttp.php in MyBB (aka MyBulletinBoard) before 1.8.5 allows remote attackers to inject arbitrary web script or HTML via the content of a post.

Unspecified vulnerability in MyBB (aka MyBulletinBoard) before 1.8.4 has unknown attack vectors related to "Group join request notifications sent to wrong group leaders."

The cache handler in MyBB (aka MyBulletinBoard) before 1.8.4 does not properly check the encoding of input to the var_export function, which allows attackers to have an unspecified impact via unknown vectors.

A JSON library in MyBB (aka MyBulletinBoard) before 1.8.4 allows remote attackers to obtain the installation path via unknown vectors.

Cross-site request forgery (CSRF) vulnerability in the Admin Control Panel (ACP) login in MyBB (aka MyBulletinBoard) before 1.8.4 allows remote attackers to hijack the authentication of unspecified victims via unknown vectors.

Cross-site scripting (XSS) vulnerability in the MyCode editor in MyBB (aka MyBulletinBoard) before 1.8.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in member.php in MyBB (aka MyBulletinBoard) before 1.8.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in the administrative backend in MyBB (aka MyBulletinBoard) before 1.8.4 allow remote authenticated users to inject arbitrary web script or HTML via the (1) MIME-type field in an add action in the config-attachment_types module to admin/index.php; (2) title or (3) short description field in an add action in the (a) config-mycode or (b) user-groups module to admin/index.php; (4) title field in an add action in the (c) forum-management or (d) tool-tasks module to admin/index.php; (5) name field in an add_set action in the style-templates module to admin/index.php; (6) title field in an add_template_group action in the style-templates module to admin/index.php; (7) name field in an add action in the config-post_icons module to admin/index.php; (8) "title to assign" field in an add action in the user-titles module to admin/index.php; or (9) username field in the config-banning module to admin/index.php.

Cross-site scripting (XSS) vulnerability in MyBB before 1.6.15 allows remote attackers to inject arbitrary web script or HTML via vectors related to video MyCode.

Cross-site scripting (XSS) vulnerability in Upload/search.php in MyBB 1.6.12 and earlier allows remote attackers to inject arbitrary web script or HTML via the keywords parameter in a do_search action, which is not properly handled in a forced SQL error message.

Cross-site scripting (XSS) vulnerability in the mycode_parse_video function in inc/class_parser.php in MyBB (aka MyBulletinBoard) before 1.6.12 allows remote attackers to inject arbitrary web script or HTML via vectors related to Yahoo video URLs.

Cross-site scripting (XSS) vulnerability in misc.php in MyBB (aka MyBulletinBoard) before 1.6.12 allows remote attackers to inject arbitrary web script or HTML via the editor parameter in a smilie list popup.

Unspecified vulnerability in MyBB before 1.6.5 has unknown impact and attack vectors, related to an "unparsed user avatar in the buddy list."

Cross-site scripting (XSS) vulnerability in MyBB before 1.6.5 allows remote attackers to inject arbitrary web script or HTML via vectors related to "usernames via AJAX."

Cross-site request forgery (CSRF) vulnerability in global.php in MyBB before 1.6.5 allows remote attackers to hijack the authentication of a user for requests that change the user's language via the language parameter.

Multiple SQL injection vulnerabilities in MyBB (aka MyBulletinBoard) before 1.6.1 allow remote attackers to execute arbitrary SQL commands via the keywords parameter in a (1) do_search action to search.php or (2) do_stuff action to private.php. NOTE: the vendor disputes this issue, saying "Although this doesn't lead to an SQL injection, it does provide a general MyBB SQL error.

MyBB (aka MyBulletinBoard) before 1.6.7 allows remote attackers to obtain sensitive information via a malformed forumread cookie, which reveals the installation path in an error message.

Cross-site scripting (XSS) vulnerability in the Admin Control Panel (ACP) in MyBB (aka MyBulletinBoard) before 1.6.7 allows remote administrators to inject arbitrary web script or HTML via a malformed file name in an orphaned attachment.

SQL injection vulnerability in the User Inline Moderation feature in the Admin Control Panel (ACP) in MyBB (aka MyBulletinBoard) before 1.6.7 allows remote administrators to execute arbitrary SQL commands via unspecified vectors.

Multiple SQL injection vulnerabilities in MyBB (aka MyBulletinBoard) before 1.6.7 allow remote administrators to execute arbitrary SQL commands via unspecified vectors in the (1) user search or (2) Mail Log in the Admin Control Panel (ACP).