{"id":"CVE-2020-25813","aliases":["BIT-mediawiki-2020-25813","GHSA-c4rj-wrmq-52rj"],"url":"https://o3.security/vulnerability/CVE-2020-25813","summary":"MediaWiki Special:UserRights exposes the existence of hidden users","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.","published":"2020-09-27T21:15:12.627Z","modified":"2026-07-08T05:53:49.756481109Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.31.9"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.34.3"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"},{"type":"ADVISORY","url":"https://meta.wikimedia.org/wiki/Special:UserRights"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:53:49.756481109Z"}}