CVE-2020-35590

LimitLoginAttempts.php in the limit-login-attempts-reloaded plugin before 2.17.4 for WordPress allows a bypass of (per IP address) rate limits because the X-Forwarded-For header can be forged. When the plugin is configured to accept an arbitrary header for the client source IP address, a malicious user is not limited to perform a brute force attack, because the client IP header accepts any arbitrary string. When randomizing the header input, the login count does not ever reach the maximum allowed retries.

• CWE-307

• https://n4nj0.github.io/advisories/wordpress-plugin-limit-login-attempts-reloaded/Third Party Advisory
• https://wordpress.org/plugins/limit-login-attempts-reloaded/#developersProduct, Third Party Advisory
• https://n4nj0.github.io/advisories/wordpress-plugin-limit-login-attempts-reloaded/Third Party Advisory
• https://wordpress.org/plugins/limit-login-attempts-reloaded/#developersProduct, Third Party Advisory

Published

Dec 21, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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