CVE-2026-45127 | MyBB up to 1.8.39 ACP Mass Mail module mass_mail.php cross-site request forgery

August 18, 2026 Yanac

A vulnerability classified as problematic has been found in MyBB up to 1.8.39. This affects an unknown part of the file admin/modules/user/mass_mail.php of the component ACP Mass Mail module. This manipulation causes cross-site request forgery.

The identification of this vulnerability is CVE-2026-45127. It is possible to initiate the attack remotely. There is no exploit available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More