CVE-2021-24863: Billminozzi Stop Bad Bots

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

The WP Block and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection Plugin StopBadBots WordPress plugin before 6.67 does not sanitise and escape the User Agent before using it in a SQL statement to save it, leading to a SQL injection

Affected products

• Billminozzi Stop Bad Bots: before 6.67 (fixed in 6.67)

Published 2021-12-13. Last modified 2026-06-17.