{"id":"CVE-2020-13485","aliases":["GHSA-wxvr-qqm7-6h65"],"url":"https://o3.security/vulnerability/CVE-2020-13485","summary":"Knock Knock plugin IP Whitelist bypass via an X-Forwarded-For HTTP header","details":"The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.","published":"2020-05-25T23:15:09.643Z","modified":"2026-07-08T20:42:43.883044Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"verbb/knock-knock","fixedVersion":"1.2.8"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md"},{"type":"EVIDENCE","url":"https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:42:43.883044Z"}}