{"id":"CVE-2025-6589","aliases":["DEBIAN-CVE-2025-6589","EUVD-2025-206630","GHSA-mv9h-82v8-3r9p","UBUNTU-CVE-2025-6589"],"status":"published","title":"With MultiBlocks enabled and a user who is suppressed via a MultiBlock, a user without 'hideuser' can see the hidden username in the BlockList","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.\n\nThis issue affects MediaWiki: \u003e= 1.42.0.","severity":{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.0048,"percentile":0.41668,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-02-02T23:03:45Z","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":"mediawiki"}],"references":[{"url":"https://phabricator.wikimedia.org/T391343","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6589"},{"url":"https://github.com/advisories/GHSA-mv9h-82v8-3r9p"},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-6589","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-6589","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-6589","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/core/+/1165111","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-6589","title":"With MultiBlocks enabled and a user who is suppressed via a MultiBlock, a user without 'hideuser' can see the hidden username in the BlockList","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.\n\nThis issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-02T23:03:45.939Z","modified":"2026-03-03T15:37:40.261Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y","level":"low","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:32:40.072186Z"}],"euvd":[{"id":"EUVD-2025-206630","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.\n\nThis issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-02T23:03:45Z","modified":"2026-03-03T15:37:40Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y","level":"low"}],"updated_at":"2026-11-02T19:48:12.247854Z"}],"ghsa":[{"id":"GHSA-mv9h-82v8-3r9p","title":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program...","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.\n\nThis issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-03T00:30:18Z","modified":"2026-03-03T18:31:26Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/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:Y/R:X/V:X/RE:X/U:X","level":"low"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:06:26.357639Z"}],"nvd":[{"id":"CVE-2025-6589","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.\n\nThis issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-02T23:16:01.36Z","modified":"2026-06-17T10:02:12.28Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/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:Y/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:11:59.832225Z"}],"osv":[{"id":"DEBIAN-CVE-2025-6589","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.  This issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-02T23:16:01.36Z","modified":"2026-09-01T20:05:55.828748029Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/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:Y/R:X/V:X/RE:X/U:X","level":"low"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-6589","description":"Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php. This issue affects MediaWiki: \u003e= 1.42.0.","status":"published","published":"2026-02-02T23:16:00Z","modified":"2026-10-17T12:57:28.95322863Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y","level":"low"}],"updated_at":"2026-11-02T16:55:52.345622Z"}]}}