{"identifier":"CVE-2026-0670","cve":{"id":"CVE-2026-0670","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki - ProofreadPage Extension: 1.45, 1.44, 1.43, 1.39.","published":"2026-01-07T19:15:56.203000+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:wikisource:proofread_page:1.39:*:*:*:*:mediawiki:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikisource:proofread_page:1.43:*:*:*:*:mediawiki:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikisource:proofread_page:1.44:*:*:*:*:mediawiki:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:wikisource:proofread_page:1.45:*:*:*:*:mediawiki:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""}],"weaknesses":["CWE-79"],"references":[{"url":"https://gerrit.wikimedia.org/r/q/I7c028db5ed81843aacd596b0ee4dc2980f5b6e3c","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","tags":["Patch"]},{"url":"https://phabricator.wikimedia.org/T409423","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","tags":["Exploit","Issue Tracking"]}],"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":"2026-01-07T19:24:45.370321Z","id":"CVE-2026-0670","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:wikisource:proofread_page:1.39:*:*:*:*:mediawiki:*:*","matchCriteriaId":"F0DC7E84-26A6-4225-AB94-EE6124C11CC8"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikisource:proofread_page:1.43:*:*:*:*:mediawiki:*:*","matchCriteriaId":"637AC797-C33D-4328-A8CD-C1E67F68457F"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikisource:proofread_page:1.44:*:*:*:*:mediawiki:*:*","matchCriteriaId":"C05208D8-F063-424A-933A-37D5357A68C9"},{"vulnerable":true,"criteria":"cpe:2.3:a:wikisource:proofread_page:1.45:*:*:*:*:mediawiki:*:*","matchCriteriaId":"7FA36D49-EE20-4805-85FE-820E37BC473E"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:18:16.056617+00:00","exploited":false,"kev_stale":false,"products":["wikisource / proofread page"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00193,"percentile":0.08963,"date":"2026-10-29","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"gerrit.wikimedia.org","source_url":"https://gerrit.wikimedia.org/r/q/I7c028db5ed81843aacd596b0ee4dc2980f5b6e3c","investigate_url":"https://investigate.aeglixmind.com/#gerrit.wikimedia.org"},{"domain":"phabricator.wikimedia.org","source_url":"https://phabricator.wikimedia.org/T409423","investigate_url":"https://investigate.aeglixmind.com/#phabricator.wikimedia.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-0670","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-0670","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-0670","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."}}