CVE-2021-36916: Wpwave Hide My Wp

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

The SQL injection vulnerability in the Hide My WP WordPress plugin (versions <= 6.2.3) is possible because of how the IP address is retrieved and used inside a SQL query. The function "hmwp_get_user_ip" tries to retrieve the IP address from multiple headers, including IP address headers that the user can spoof, such as "X-Forwarded-For." As a result, the malicious payload supplied in one of these IP address headers will be directly inserted into the SQL query, making SQL injection possible.

Affected products

• Wpwave Hide My Wp: up to and including 6.2.3

Published 2021-11-24. Last modified 2026-06-17.