{"id":"CVE-2026-103439","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103439","generatedAt":"2026-10-28T05:26:18.598Z","title":"Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS).","description":"Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS).\n\nThis issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.","published":"2026-09-30T18:18:17.000Z","lastModified":"2026-09-30T21:17:09.000Z","status":"Awaiting Analysis","sourceIdentifier":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","cvss":{"version":"4.0","score":0.3,"severity":"LOW","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-80"],"affected":[],"epss":{"score":0.00106,"percentile":0.01105,"date":"2026-10-27","history":[{"date":"2026-10-01","score":0.00145,"percentile":0.03171}]},"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 (0.11%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T18:18:17.000Z","detail":{"score":"0.3","severity":"LOW","publishedAt":"2026-09-30T18:18:16.590Z"},"summary":"New CVE, low severity (CVSS 0.3)."}],"references":[{"url":"https://gerrit.wikimedia.org/r/q/Ie7a35b211565148e0cae437a4a8c41633b81f1b3","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T182213","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103439","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."}