CVE-2021-37597: Wpcerber Wp Cerber

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

WP Cerber before 8.9.3 allows MFA bypass via wordpress_logged_in_[hash] manipulation.

Affected products

• Wpcerber Wp Cerber: before 8.9.3 (fixed in 8.9.3)

Published 2021-08-19. Last modified 2026-06-17.