{"id":"CVE-2026-100243","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100243","generatedAt":"2026-10-28T01:51:03.224Z","title":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS.","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS.\n\nThis issue affects Mediawiki - WikiSEO Extension: from * before 1.46.1, 1.45.5, 1.43.10.","published":"2026-09-29T17:17:01.000Z","lastModified":"2026-09-30T21:16:53.000Z","status":"Awaiting Analysis","sourceIdentifier":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","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":[],"epss":{"score":0.00155,"percentile":0.04536,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00155,"percentile":0.04054}]},"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 (0.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-09-30T23:15:17.000Z","detail":{"from":null,"score":"6.1","severity":"MEDIUM","fromSeverity":null},"summary":"Now scored CVSS 6.1 MEDIUM."},{"kind":"new","label":"New CVE","at":"2026-09-29T17:17:01.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-09-29T17:17:01.340Z"},"summary":"New CVE, medium severity (CVSS 6.1)."}],"references":[{"url":"https://gerrit.wikimedia.org/r/q/Iff6ef320017649750e5c6723a91ee298eb97a408","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T430896","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100243","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."}