CVE-2021-24384: Beardev Joomsport

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

The joomsport_md_load AJAX action of the JoomSport WordPress plugin before 5.1.8, registered for both unauthenticated and unauthenticated users, unserialised user input from the shattr POST parameter, leading to a PHP Object Injection issue. Even though the plugin does not have a suitable gadget chain to exploit this, other installed plugins could, which might lead to more severe issues such as RCE

Affected products

• Beardev Joomsport: before 5.1.8 (fixed in 5.1.8)

Published 2021-07-06. Last modified 2026-06-17.