{"id":"CVE-2021-27821","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-27821","generatedAt":"2026-10-27T22:31:10.613Z","title":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","published":"2021-05-25T14:15:08.000Z","lastModified":"2026-07-09T01:16:49.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["openwrt/luci"],"epss":{"score":0.00591,"percentile":0.47993,"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":"low","text":"Lower severity and a low EPSS score (0.59%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://openwrt.org/advisory/start","source":"cve@mitre.org"},{"url":"https://openwrt.org/releases/19.07/start","source":"cve@mitre.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27821","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."}