{"id":"CVE-2015-8624","details":"The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should be logged, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8623.","modified":"2026-04-16T06:22:37.984661263Z","published":"2017-03-23T20:59:00Z","references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2015/12/21/8"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2015/12/23/7"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html"},{"type":"ADVISORY","url":"https://phabricator.wikimedia.org/T119309"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2015/12/21/8"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2015/12/23/7"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2015/12/21/8"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2015/12/23/7"},{"type":"FIX","url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html"},{"type":"FIX","url":"https://phabricator.wikimedia.org/T119309"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}