{"id":"CVE-2021-27310","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-27310","generatedAt":"2026-10-27T20:19:11.476Z","title":"Clansphere CMS 2011.4 allows unauthenticated reflected XSS via \"language\" parameter.","description":"Clansphere CMS 2011.4 allows unauthenticated reflected XSS via \"language\" parameter.","published":"2021-03-23T14:15:13.000Z","lastModified":"2026-06-17T03:44:38.000Z","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":["csphere/clansphere"],"epss":{"score":0.02816,"percentile":0.86454,"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 (2.82%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/xoffense/POC/blob/main/Clansphere%202011.4%20%22language%22%20xss.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/xoffense/POC/blob/main/Clansphere%202011.4%20%22language%22%20xss.md","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27310","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."}