{"id":"CVE-2019-18611","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-18611","generatedAt":"2026-10-28T01:51:27.302Z","title":"An issue was discovered in the CheckUser extension through 1.34 for MediaWiki.","description":"An issue was discovered in the CheckUser extension through 1.34 for MediaWiki. Certain sensitive information within oversighted edit summaries made available via the MediaWiki API was potentially visible to users with various levels of access to this extension. Said users should not have been able to view these oversighted edit summaries via the MediaWiki API.","published":"2019-10-29T19:15:20.000Z","lastModified":"2026-06-17T02:25:10.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-200"],"affected":["mediawiki/checkuser"],"epss":{"score":0.00926,"percentile":0.60217,"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 (0.93%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://gerrit.wikimedia.org/r/q/Ie0aa0df2b3f03d8b910733f1b5e600a0dc978765","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://phabricator.wikimedia.org/T234862","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/q/Ie0aa0df2b3f03d8b910733f1b5e600a0dc978765","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://phabricator.wikimedia.org/T234862","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-18611","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."}