{"id":"CVE-2026-103439","aliases":["EUVD-2026-90211","GHSA-mfg6-8655-c3r3"],"status":"published","title":"Various rawParams() and escaped() updates to prevent XSS in Wikibase extension","description":"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.","severity":{"version":"4.0","score":0.3,"vector":"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00106,"percentile":0.01113,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-80"],"published":"2026-09-30T17:34:10Z","modified":"2026-09-30T21:17:08Z","products":[{"vendor":"the wikimedia foundation","product":"mediawiki wikbase extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T182213"},{"url":"https://gerrit.wikimedia.org/r/q/Ie7a35b211565148e0cae437a4a8c41633b81f1b3"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103439"},{"url":"https://github.com/advisories/GHSA-mfg6-8655-c3r3"}],"sources":{"cve":[{"id":"CVE-2026-103439","title":"Various rawParams() and escaped() updates to prevent XSS in Wikibase extension","description":"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.","status":"published","published":"2026-09-30T17:34:10.328Z","modified":"2026-09-30T20:01:01.56Z","cvss":[{"version":"4.0","score":0.3,"vector":"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","level":"low","assessor":"cna"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T13:34:37.420074Z"}],"euvd":[{"id":"EUVD-2026-90211","description":"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.","status":"published","published":"2026-09-30T17:34:10Z","modified":"2026-09-30T20:01:01Z","cvss":[{"version":"4.0","score":0.3,"vector":"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","level":"low"}],"updated_at":"2026-11-02T17:27:47.293232Z"}],"ghsa":[{"id":"GHSA-mfg6-8655-c3r3","title":"Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in...","description":"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.","status":"published","published":"2026-09-30T18:33:50Z","modified":"2026-09-30T18:33:56Z","cvss":[{"version":"4.0","score":0.3,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"low"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T15:12:38.152609Z"}],"nvd":[{"id":"CVE-2026-103439","description":"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.","status":"published","published":"2026-09-30T18:18:16.59Z","modified":"2026-09-30T21:17:08.833Z","cvss":[{"version":"4.0","score":0.3,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"low","assessor":"secondary"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:12:53.097633Z"}]}}