{"id":"CVE-2021-42650","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-42650","generatedAt":"2026-10-27T19:04:49.552Z","title":"Cross Site Scripting (XSS vulnerability exists in Portainer before 2.9.1 via the node input box in Custom Templates.","description":"Cross Site Scripting (XSS vulnerability exists in Portainer before 2.9.1 via the node input box in Custom Templates.","published":"2021-10-18T21:15:09.000Z","lastModified":"2026-06-17T04:09:55.000Z","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":["portainer/portainer"],"epss":{"score":0.00626,"percentile":0.49712,"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 (0.63%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/portainer/portainer/pull/5766","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/purple-WL/Security-vulnerability/blob/main/Portainer%20Custom%20Templates%20xss","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/portainer/portainer/pull/5766","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/purple-WL/Security-vulnerability/blob/main/Portainer%20Custom%20Templates%20xss","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-42650","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."}