{"id":"CVE-2025-6596","aliases":["DEBIAN-CVE-2025-6596","EUVD-2025-206628","GHSA-r8cg-vqg3-34j4","UBUNTU-CVE-2025-6596"],"status":"published","title":"Vector inserts portlet labels as HTML, allowing for stored XSS through system messages","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.\n\nThis issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","severity":{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","level":"none","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00432,"percentile":0.37789,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-02-02T22:58:20Z","modified":"2026-10-17T12:57:28Z","fixes":[{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.43.3+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.43.3+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.43.3+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.43.3+dfsg-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-2","1:1.27.4-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.31.2-1ubuntu1","1:1.31.5-1","1:1.31.5-1ubuntu1","1:1.31.5-2","1:1.31.5-3","1:1.31.5-3ubuntu1","1:1.31.6-1","1:1.31.7-1","1:1.31.7-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.35.3-1","1:1.35.4-1","1:1.35.5-1","1:1.35.5-1ubuntu1","1:1.35.5-1ubuntu2","1:1.35.5-1ubuntu3","1:1.35.6-1","1:1.35.6-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.39.4-2","1:1.39.5-1","1:1.39.6-1","1:1.39.7-1","1:1.39.7-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.1+dfsg-1","1:1.43.1+dfsg-2","1:1.43.3+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.8+dfsg-2","1:1.43.9+dfsg-1","1:1.43.9+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.43.3+dfsg-1","1:1.43.5+dfsg-1","1:1.43.6+dfsg-2","1:1.43.8+dfsg-1","1:1.43.8+dfsg-2"]}],"products":[{"vendor":"wikimedia foundation","product":"vector"}],"references":[{"url":"https://phabricator.wikimedia.org/T396685","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6596"},{"url":"https://github.com/advisories/GHSA-r8cg-vqg3-34j4"},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-6596","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-6596","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-6596","tags":["report"]},{"url":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/TT45WDZ7MDTXXBEFLBMLAJI532O2PN2U/","tags":["report"]},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/skins/Vector/+/1165107","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-6596","title":"Vector inserts portlet labels as HTML, allowing for stored XSS through system messages","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.\n\nThis issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-02T22:58:20.912Z","modified":"2026-02-03T21:12:11.934Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","level":"none","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:40.072186Z"}],"euvd":[{"id":"EUVD-2025-206628","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.\n\nThis issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-02T22:58:20Z","modified":"2026-02-03T21:12:11Z","updated_at":"2026-11-02T19:48:44.612436Z"}],"ghsa":[{"id":"GHSA-r8cg-vqg3-34j4","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 Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.\n\nThis issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-03T00:30:18Z","modified":"2026-02-03T00:30:25Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X","level":"none"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:06:00.828476Z"}],"nvd":[{"id":"CVE-2025-6596","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.\n\nThis issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-02T23:16:02.31Z","modified":"2026-06-17T10:02:13.147Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X","level":"none","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:11:59.832225Z"}],"osv":[{"id":"DEBIAN-CVE-2025-6596","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.  This issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-02T23:16:02.31Z","modified":"2026-09-01T20:05:55.94197153Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X","level":"none"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-6596","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js. This issue affects Vector: from \u003e= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.","status":"published","published":"2026-02-02T23:16:00Z","modified":"2026-10-17T12:57:28.05215341Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","level":"none"}],"updated_at":"2026-11-02T16:55:52.345622Z"}]}}