{"id":"CVE-2026-100380","title":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - Wikibase …","summary":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - Wikibase …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","cwe":["CWE-79"],"vendor":"Wikimedia Foundation","product":"Mediawiki - Wikibase Extension","affected":["mediawiki_-_wikibase_extension < 1.46.1, 1.45.5, 1.43.10"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T21:17:22.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100380","references":[{"url":"https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T434549","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-25T21:19:40.141Z","slug":"CVE-2026-100380","body":"## Overview\n\nImproper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}