{"id":"GHSA-c4rj-wrmq-52rj","aliases":["BIT-mediawiki-2020-25813","CVE-2020-25813"],"title":"MediaWiki Special:UserRights exposes the existence of hidden users","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"MODERATE","description":"In MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3, Special:UserRights exposes the existence of hidden users.","severity":"medium","score":5.3,"published":"2022-05-24T17:29:42.000Z","modified":"2024-12-01T05:37:52.772Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"mediawiki/core","sources":[{"name":"OSV · GHSA-c4rj-wrmq-52rj","url":"https://osv.dev/vulnerability/GHSA-c4rj-wrmq-52rj"}],"ranges":[{"events":[{"introduced":"1.31.0"},{"fixed":"1.31.9"}],"type":"ECOSYSTEM"}],"versions":["1.31.0","1.31.1","1.31.2","1.31.3","1.31.4","1.31.5","1.31.6","1.31.7","1.31.8"],"fixed":["1.31.9"]},{"ecosystem":"Packagist","name":"mediawiki/core","sources":[{"name":"OSV · GHSA-c4rj-wrmq-52rj","url":"https://osv.dev/vulnerability/GHSA-c4rj-wrmq-52rj"}],"ranges":[{"events":[{"introduced":"1.32.0"},{"fixed":"1.34.3"}],"type":"ECOSYSTEM"}],"versions":["1.32.0","1.32.1","1.32.2","1.32.3","1.32.4","1.32.5","1.32.6","1.33.0","1.33.0-rc.0","1.33.1","1.33.2","1.33.3","1.33.4","1.34.0","1.34.0-rc.0","1.34.0-rc.1","1.34.1","1.34.2"],"fixed":["1.34.3"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2020-25813","https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25813.yaml","https://github.com/wikimedia/mediawiki","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6","https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html","https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html","https://meta.wikimedia.org/wiki/Special:UserRights","https://phabricator.wikimedia.org/T232568"],"sources":[{"name":"OSV","id":"GHSA-c4rj-wrmq-52rj","modified":"2024-12-01T05:37:52.772718Z","url":"https://osv.dev/vulnerability/GHSA-c4rj-wrmq-52rj"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T23:25:34.350Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}