{"id":"CVE-2020-27620","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-27620","generatedAt":"2026-10-27T22:32:47.045Z","title":"The Cosmos Skin for MediaWiki through 1.35.0 has stored XSS because MediaWiki messages were not being properly escaped.","description":"The Cosmos Skin for MediaWiki through 1.35.0 has stored XSS because MediaWiki messages were not being properly escaped. This is related to wfMessage and Html::rawElement, as demonstrated by CosmosSocialProfile::getUserGroups.","published":"2020-10-22T04:15:12.000Z","lastModified":"2026-06-17T03:09:23.000Z","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":["mediawiki/skin\\"],"epss":{"score":0.01123,"percentile":0.66015,"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 (1.12%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634749","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634751","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634752","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://phabricator.wikimedia.org/T265440","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634749","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634751","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634752","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://phabricator.wikimedia.org/T265440","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-27620","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."}