{"identifier":"CVE-2026-0671","cve":{"id":"CVE-2026-0671","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki - UploadWizard extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki - UploadWizard extension: 1.45, 1.44, 1.43, 1.39.","published":"2026-01-08T17:15:50.240000+00:00","modified":"2026-10-26T21:10:00.170000+00:00","status":"Analyzed","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","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.39:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.43:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.44:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.45:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""}],"weaknesses":["CWE-79"],"references":[{"url":"https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","tags":["Patch"]},{"url":"https://phabricator.wikimedia.org/T407157","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","tags":["Exploit","Issue Tracking","Vendor Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-01-08T20:13:21.226518Z","id":"CVE-2026-0671","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.39:*:*:*:*:*:*:*","matchCriteriaId":"E177CDD3-DB91-4A7B-9C1E-1CE45AC857BC"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.43:*:*:*:*:*:*:*","matchCriteriaId":"360E8939-87FB-40A8-A07E-E3F5CC4A2AFC"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.44:*:*:*:*:*:*:*","matchCriteriaId":"1EBA4166-5A79-4636-8122-71A6DB43FE28"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.45:*:*:*:*:*:*:*","matchCriteriaId":"393B61C5-BB08-4269-840B-C68BFE5F5219"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:18:16.299733+00:00","exploited":false,"kev_stale":false,"products":["wikimedia / mediawiki-extensions-uploadwizard"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00241,"percentile":0.1527,"date":"2026-10-29","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"gerrit.wikimedia.org","source_url":"https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1","investigate_url":"https://investigate.aeglixmind.com/#gerrit.wikimedia.org"},{"domain":"phabricator.wikimedia.org","source_url":"https://phabricator.wikimedia.org/T407157","investigate_url":"https://investigate.aeglixmind.com/#phabricator.wikimedia.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-0671","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-0671","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-0671","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}