{"id":"CVE-2019-16738","aliases":["GHSA-7hwr-f745-5rwq"],"url":"https://o3.security/vulnerability/CVE-2019-16738","summary":"MediaWiki information disclosure","details":"In MediaWiki through 1.33.0, Special:Redirect allows information disclosure of suppressed usernames via a User ID Lookup.","published":"2019-09-26T02:15:10.833Z","modified":"2026-10-24T10:30:49.758531995Z","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":1,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.31.4"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.32.4"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.33.1"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7OMG3BMUHGWTAPYTK2NXM6CXF6FYLOUO/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QBAOLXETM5BOYQG6OQVHGB2LNLZUXVN6/"},{"type":"ADVISORY","url":"https://seclists.org/bugtraq/2019/Oct/32"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4545"},{"type":"FIX","url":"https://phabricator.wikimedia.org/T230402"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16738"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-16738.yaml"},{"type":"PACKAGE","url":"https://github.com/wikimedia/mediawiki"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7OMG3BMUHGWTAPYTK2NXM6CXF6FYLOUO"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QBAOLXETM5BOYQG6OQVHGB2LNLZUXVN6"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7OMG3BMUHGWTAPYTK2NXM6CXF6FYLOUO"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QBAOLXETM5BOYQG6OQVHGB2LNLZUXVN6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:49.758531995Z"}}