{"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":"2026-07-08T05:55:32.556387215Z","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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:55:32.556387215Z"}}