CVE-2026-45122 | MyBB up to 1.8.39 Calendar calendar.php do_move permission

August 18, 2026 Yanac

A vulnerability described as critical has been identified in MyBB up to 1.8.39. This issue affects the function do_move of the file calendar.php of the component Calendar Module. Such manipulation leads to permission issues.

This vulnerability is uniquely identified as CVE-2026-45122. The attack can be launched remotely. No exploit exists.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More