{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100380","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","state":"PUBLISHED","assignerShortName":"wikimedia-foundation","dateReserved":"2026-09-25T19:28:11.982Z","datePublished":"2026-09-25T20:58:24.004Z","dateUpdated":"2026-09-25T20:58:24.004Z"},"containers":{"cna":{"providerMetadata":{"orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","shortName":"wikimedia-foundation","dateUpdated":"2026-09-25T20:58:24.004Z"},"title":"Reflected XSS in Wikibase Special:SetLabel language validation","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","value":"CAPEC-63 Cross-Site Scripting (XSS)"}]}],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - Wikibase Extension","repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/Wikibase/+/refs/heads/master","versions":[{"status":"affected","version":"*","lessThan":"1.46.1, 1.45.5, 1.43.10","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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 Extension: from * before 1.46.1, 1.45.5, 1.43.10.","supportingMedia":[{"type":"text/html","base64":false,"value":"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).<p>This issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.</p>"}]}],"references":[{"url":"https://phabricator.wikimedia.org/T434549"},{"url":"https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"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"}}],"credits":[{"lang":"en","value":"Marco Paciaroni (bombobombone)","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}}}}