{"id":"CVE-2026-100245","aliases":["EUVD-2026-89092","GHSA-2rcm-h6cw-xrfr"],"status":"published","title":"Stored XSS on Wikibase Special:SetSiteLink via unescaped system message","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00155,"percentile":0.04624,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-29T16:52:54Z","modified":"2026-09-30T21:31:59Z","products":[{"vendor":"the wikimedia foundation","product":"mediawiki - wikibase extension"},{"vendor":"wikimedia foundation","product":"mediawiki - wikibase extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T432877"},{"url":"https://gerrit.wikimedia.org/r/q/If871fa7684d42dae057c0517d4a17132cd7aefeb"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100245"},{"url":"https://github.com/advisories/GHSA-2rcm-h6cw-xrfr"}],"sources":{"cve":[{"id":"CVE-2026-100245","title":"Stored XSS on Wikibase Special:SetSiteLink via unescaped system message","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.","status":"published","published":"2026-09-29T16:52:54.809Z","modified":"2026-09-30T20:43:25.148Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:06.925367Z"}],"euvd":[{"id":"EUVD-2026-89092","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.","status":"published","published":"2026-09-29T16:52:54Z","modified":"2026-09-30T20:43:25Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:27:47.293232Z"}],"ghsa":[{"id":"GHSA-2rcm-h6cw-xrfr","title":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')...","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.","status":"published","published":"2026-09-29T18:31:47Z","modified":"2026-09-30T21:31:59Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:38.770231Z"}],"nvd":[{"id":"CVE-2026-100245","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.","status":"published","published":"2026-09-29T17:17:01.567Z","modified":"2026-09-30T21:16:53.61Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:52.413234Z"}]}}