{"id":"CVE-2020-13485","aliases":["EUVD-2022-5675","GHSA-wxvr-qqm7-6h65"],"status":"published","title":"Knock Knock plugin IP Whitelist bypass via an X-Forwarded-For HTTP header","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01355,"percentile":0.71979,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-697"],"published":"2020-05-25T22:38:53Z","modified":"2026-10-20T10:51:36Z","fixes":[{"ecosystem":"Packagist","package":"verbb/knock-knock","fixed_in":["1.2.8"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"verbb/knock-knock","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8"}]}]},{"source":"osv","ecosystem":"Packagist","package":"verbb/knock-knock","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8"}]}],"versions":["1.0.0","1.0.1","1.0.2","1.0.3","1.1.0","1.1.1","1.1.2","1.1.3","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.2.4.1","1.2.4.2","1.2.5","1.2.6","1.2.7"]}],"products":[{"vendor":"verbb","product":"knock_knock"}],"references":[{"url":"https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13485","tags":["advisory"]},{"url":"https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wxvr-qqm7-6h65"},{"url":"https://github.com/verbb/knock-knock","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-13485","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2020-05-25T22:38:53Z","modified":"2024-08-04T12:18:18.296Z","updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2022-5675","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2020-05-25T22:38:53Z","modified":"2024-08-04T12:18:18Z","updated_at":"2026-11-03T03:07:37.234427Z"}],"ghsa":[{"id":"GHSA-wxvr-qqm7-6h65","title":"Knock Knock plugin IP Whitelist bypass via an X-Forwarded-For HTTP header","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2022-05-24T17:18:42Z","modified":"2024-04-24T17:46:50Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:37:45.47408Z"}],"nvd":[{"id":"CVE-2020-13485","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2020-05-25T23:15:09.643Z","modified":"2026-06-17T02:53:12.797Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:06:04.922138Z"}],"osv":[{"id":"CVE-2020-13485","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2020-05-25T23:15:09.643Z","modified":"2026-10-20T10:51:36.395540407Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"GHSA-wxvr-qqm7-6h65","title":"Knock Knock plugin IP Whitelist bypass via an X-Forwarded-For HTTP header","description":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","status":"published","published":"2022-05-24T17:18:42Z","modified":"2024-04-24T18:11:36.907488Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}