{"id":"UBUNTU-CVE-2020-25813","details":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, Special:UserRights exposes the existence of hidden users.","modified":"2026-05-27T10:17:04.081840532Z","published":"2020-09-27T21:15:00Z","upstream":["CVE-2020-25813"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-25813"},{"type":"REPORT","url":"https://lists.wikimedia.org/pipermail/wikitech-l/2020-September/093888.html"},{"type":"REPORT","url":"https://phabricator.wikimedia.org/T232568"},{"type":"REPORT","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"},{"type":"REPORT","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"},{"type":"REPORT","url":"https://meta.wikimedia.org/wiki/Special:UserRights"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-25813"}],"affected":[{"package":{"name":"mediawiki","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/mediawiki?arch=source&distro=bionic"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"mediawiki","binary_version":"1:1.27.4-3"},{"binary_name":"mediawiki-classes","binary_version":"1:1.27.4-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25813.json"}},{"package":{"name":"mediawiki","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Ffocal"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"mediawiki","binary_version":"1:1.31.7-1ubuntu0.1~esm1"},{"binary_name":"mediawiki-classes","binary_version":"1:1.31.7-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25813.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}