{"id":"CVE-2019-12468","aliases":["GHSA-wrhx-3pxr-6vgg"],"url":"https://o3.security/vulnerability/CVE-2019-12468","summary":"Wikimedia MediaWiki Incorrect Access Control vulnerability","details":"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.","published":"2019-07-10T15:15:12.430Z","modified":"2026-07-08T05:56:25.414332286Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.03053,"percentile":0.86516,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.27.6"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.30.2"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.31.2"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.32.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/"},{"type":"ADVISORY","url":"https://seclists.org/bugtraq/2019/Jun/12"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4460"},{"type":"FIX","url":"https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html"},{"type":"FIX","url":"https://phabricator.wikimedia.org/T197279"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:56:25.414332286Z"}}