CVE-2022-4120: Trumani Stop Spammers

Critical severity, CVSS 9.8. EPSS: 18.1% chance of exploitation in the next 30 days.

The Stop Spammers Security | Block Spam Users, Comments, Forms WordPress plugin before 2022.6 passes base64 encoded user input to the unserialize() PHP function when CAPTCHA are used as second challenge, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain

Affected products

• Trumani Stop Spammers: before 2022.6 (fixed in 2022.6)

Published 2022-12-26. Last modified 2026-06-17.