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MyBB < 1.8.9 Multiple CSRF/XSRF



The remote web server is running a PHP application that is vulnerable to a Cross-Site Request Forgery (CSRF/XSRF) attack vector.


Versions of MyBB (MyBulletinBoard) prior to 1.8.9 are affected by a flaw as HTTP requests do not require multiple steps, explicit confirmation, or a unique token when performing certain sensitive actions. By tricking a user into following a specially crafted link, a context-dependent attacker can perform a CSRF/XSRF attack causing the victim to remove subscriptions.


Upgrade to MyBB version 1.8.9 or later.