CVE-2026-45116

MyBB versions prior to 1.8.40 have a type-confusion flaw in UserDataHandler::verify_profile_fields() (inc/datahandlers/user.php): when a checkbox/multiselect profile field is submitted as a non-array value, the is_array() check is skipped, bypassing specialized validation. The unchecked value is ...

PT-2026-77170

MyBB is free and open source forum software. Prior to 1.8.40, the user datahandler does not properly validate checkbox and multiselect profile field types, resulting in stored JavaScript code injection. UserDataHandler::verify profile fields only performs the specialized validation when is...

Sql injection

SQL injection vulnerability in inc/datahandlers/user.php in MyBB aka MyBulletinBoard before 1.4.7 allows remote authenticated users to execute arbitrary SQL commands via the birthdayprivacy parameter...

CVE-2008-0787

SQL injection vulnerability in inc/datahandlers/pm.php in MyBB before 1.2.12 allows remote authenticated users to execute arbitrary SQL commands via the optionsdisablesmilies parameter to private.php...