{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103439","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","state":"PUBLISHED","assignerShortName":"wikimedia-foundation","dateReserved":"2026-09-30T15:41:01.269Z","datePublished":"2026-09-30T17:34:10.328Z","dateUpdated":"2026-09-30T20:01:01.560Z"},"containers":{"cna":{"providerMetadata":{"orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","shortName":"wikimedia-foundation","dateUpdated":"2026-09-30T17:34:10.328Z"},"title":"Various rawParams() and escaped() updates to prevent XSS in Wikibase extension","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-80","description":"CWE-80 Improper neutralization of Script-Related HTML tags in a web page (basic XSS)","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","value":"CAPEC-63 Cross-Site Scripting (XSS)"}]}],"affected":[{"vendor":"The Wikimedia Foundation","product":"MediaWiki Wikbase extension","repo":"https://gerrit.wikimedia.org/r/mediawiki/extensions/Wikibase","versions":[{"status":"affected","version":"1.46"},{"status":"affected","version":"1.45"},{"status":"affected","version":"1.43"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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).<p>This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.</p>"}]}],"references":[{"url":"https://phabricator.wikimedia.org/T182213"},{"url":"https://gerrit.wikimedia.org/r/q/Ie7a35b211565148e0cae437a4a8c41633b81f1b3"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"LOW","exploitMaturity":"PROOF_OF_CONCEPT","Safety":"NEGLIGIBLE","Automatable":"YES","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"AMBER","version":"4.0","baseSeverity":"LOW","baseScore":0.3,"vectorString":"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/S:N/AU:Y/R:U/V:D/RE:M/U:Amber"}}],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-103439","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T18:12:13.696391Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T20:01:01.560Z"}}]}}