{"id":"CVE-2019-12468","aliases":["DEBIAN-CVE-2019-12468","DSA-4460-1","EUVD-2022-5631","GHSA-wrhx-3pxr-6vgg","MGASA-2019-0279","UBUNTU-CVE-2019-12468"],"status":"published","title":"Wikimedia MediaWiki Incorrect Access Control vulnerability","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03334,"percentile":0.88721,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284","CWE-306"],"published":"2019-06-12T00:00:00Z","modified":"2026-10-24T10:30:25Z","fixes":[{"ecosystem":"Packagist","package":"mediawiki/core","fixed_in":["1.27.6","1.30.2","1.31.2","1.32.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.31.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.31.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.31.2-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.27.0"},{"fixed":"1.27.6"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.0"},{"fixed":"1.30.2"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.2"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.32.0"},{"fixed":"1.32.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.2-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.7-1~deb9u1"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-1~bpo8+1","1:1.27.4-1~deb9u1","1:1.27.4-2","1:1.27.4-3","1:1.27.5-1~deb9u1","1:1.27.6-1~deb9u1"],"bundled":10},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.27.0"},{"fixed":"1.27.6"}]}],"versions":["1.27.0","1.27.1","1.27.2","1.27.3","1.27.4","1.27.5"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.0"},{"fixed":"1.30.2"}]}],"versions":["1.30.0","1.30.1"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.2"}]}],"versions":["1.31.0","1.31.1"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.32.0"},{"fixed":"1.32.2"}]}],"versions":["1.32.0","1.32.1"]},{"source":"osv","ecosystem":"Mageia:6","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.27.7-1.mga6"}]}],"bundled":10},{"source":"osv","ecosystem":"Mageia:7","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.3-1.mga7"}]}],"bundled":10},{"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"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2019/dsa-4460","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://seclists.org/bugtraq/2019/Jun/12","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://phabricator.wikimedia.org/T197279","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12468","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12468.yaml","tags":["web"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wrhx-3pxr-6vgg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-12468","tags":["advisory"]},{"url":"https://github.com/wikimedia/mediawiki","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2019-0279.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=25273","tags":["report"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2019-June/000230.html","tags":["web"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2019-June/000232.html","tags":["web"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2019-July/000234.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2019-12468","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-12468","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-12468","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T14:58:15Z","modified":"2024-08-04T23:24:37.085Z","updated_at":"2026-11-02T14:20:23.697579Z"}],"euvd":[{"id":"EUVD-2022-5631","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T14:58:15Z","modified":"2024-08-04T23:24:37Z","updated_at":"2026-11-03T02:40:45.973526Z"}],"ghsa":[{"id":"GHSA-wrhx-3pxr-6vgg","title":"Wikimedia MediaWiki Incorrect Access Control vulnerability","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2022-05-24T16:49:54Z","modified":"2024-05-15T22:44:05Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:37:49.987036Z"}],"nvd":[{"id":"CVE-2019-12468","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T15:15:12.43Z","modified":"2026-06-17T02:14:43.22Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:05:19.195714Z"}],"osv":[{"id":"CVE-2019-12468","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T15:15:12.43Z","modified":"2026-10-24T10:30:25.630345766Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"DEBIAN-CVE-2019-12468","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T15:15:12.43Z","modified":"2026-09-21T07:00:56.63948319Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:31.467893Z"},{"id":"GHSA-wrhx-3pxr-6vgg","title":"Wikimedia MediaWiki Incorrect Access Control vulnerability","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2022-05-24T16:49:54Z","modified":"2024-05-19T02:24:42.103213Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:46:59.131095Z"},{"id":"UBUNTU-CVE-2019-12468","description":"An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.","status":"published","published":"2019-07-10T15:15:00Z","modified":"2025-10-24T04:47:40Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"DSA-4460-1","title":"mediawiki - security update","status":"published","published":"2019-06-12T00:00:00Z","modified":"2026-03-09T02:09:35.985625Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"MGASA-2019-0279","title":"Updated mediawiki packages fix security vulnerabilities","description":"Updated mediawiki packages fix security vulnerabilities:\n\nPotential XSS in jQuery (CVE-2019-11358).\n\nAn account can be logged out without using a token (CSRF) (CVE-2019-12466).\n\nA spammer can use Special:ChangeEmail to send out spam with no rate limiting\nor ability to block them (CVE-2019-12467).\n\nDirectly POSTing to Special:ChangeEmail would allow for bypassing\nreauthentication, allowing for potential account takeover (CVE-2019-12468).\n\nExposed suppressed username or log in Special:EditTags (CVE-2019-12469).\n\nExposed suppressed log in RevisionDelete page (CVE-2019-12470).\n\nLoading user JavaScript from a non-existent account allows anyone to create\nthe account, and XSS the users' loading that script (CVE-2019-12471).\n\nIt is possible to bypass the limits on IP range blocks (`$wgBlockCIDRLimit`)\nby using the API (CVE-2019-12472).\n\nPassing invalid titles to the API could cause a DoS by querying the entire\n`watchlist` table (CVE-2019-12473).\n\nPrivileged API responses that include whether a recent change has been\npatrolled may be cached publicly (CVE-2019-12474).\n\nThe mediawiki package has been updated to version 1.27.6 (Mageia 6) and 1.31.2\n(Mageia 7), fixing these issues and other bugs.  See the release announcements\nfor more details.\n","status":"published","published":"2019-09-15T14:45:31Z","modified":"2026-04-16T04:42:36.693653808Z","updated_at":"2026-11-02T15:49:40.793816Z"}]}}