{"id":"CVE-2020-35590","aliases":["EUVD-2020-23256","GHSA-ch2j-pqr2-h9jh"],"status":"published","title":"LimitLoginAttempts.php in the limit-login-attempts-reloaded plugin before 2.17.4 for WordPress...","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.04348,"percentile":0.91344,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-307"],"published":"2020-12-21T06:03:52Z","modified":"2026-06-17T03:13:59Z","exploits":[{"source":"pocgithub","id":"N4nj0/CVE-2020-35590","title":"N4nj0/CVE-2020-35590","date":"2020-12-23","url":"https://github.com/N4nj0/CVE-2020-35590"}],"products":[{"vendor":"limitloginattempts","product":"limit_login_attempts_reloaded"}],"references":[{"url":"https://n4nj0.github.io/advisories/wordpress-plugin-limit-login-attempts-reloaded/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://wordpress.org/plugins/limit-login-attempts-reloaded/#developers","tags":["x_refsource_MISC","x_transferred","Product","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35590"},{"url":"https://github.com/advisories/GHSA-ch2j-pqr2-h9jh"}],"sources":{"cve":[{"id":"CVE-2020-35590","description":"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.","status":"published","published":"2020-12-21T06:03:52Z","modified":"2024-08-04T17:09:14.444Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2020-23256","description":"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.","status":"published","published":"2020-12-21T06:03:52Z","modified":"2024-08-04T17:09:14Z","updated_at":"2026-11-03T03:07:05.848444Z"}],"ghsa":[{"id":"GHSA-ch2j-pqr2-h9jh","title":"LimitLoginAttempts.php in the limit-login-attempts-reloaded plugin before 2.17.4 for WordPress...","description":"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.","status":"published","published":"2022-05-24T17:37:07Z","modified":"2023-01-29T05:05:48Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:45:52.819939Z"}],"nvd":[{"id":"CVE-2020-35590","description":"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.","status":"published","published":"2020-12-21T07:15:14.177Z","modified":"2026-06-17T03:13:59.667Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}