{"id":"CVE-2020-13485","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13485","generatedAt":"2026-10-27T23:29:11.082Z","title":"The Knock Knock plugin before 1.2.8 for Craft CMS allows 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.","published":"2020-05-25T23:15:10.000Z","lastModified":"2026-06-17T02:53:13.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","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"},"cwe":["CWE-697"],"affected":["verbb/knock knock"],"epss":{"score":0.01355,"percentile":0.71415,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13485","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}