CVE-2021-36916

critical

Description

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.

References

https://patchstack.com/hide-my-wp-vulnerabilities-fixed/

https://patchstack.com/database/vulnerability/hide-my-wp/wordpress-hide-my-wp-premium-plugin-6-2-3-sql-injection-sqli-vulnerability

https://codecanyon.net/item/hide-my-wp-amazing-security-plugin-for-wordpress/4177158

Details

Source: Mitre, NVD

Published: 2021-11-24

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00582