{"id":"CVE-2021-30156","aliases":["BIT-mediawiki-2021-30156","EUVD-2021-17092","GHSA-4w3g-mpj2-j247","UBUNTU-CVE-2021-30156"],"status":"published","title":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2....","description":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. 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Special:Contributions can leak that a \"hidden\" user exists.","status":"published","published":"2021-04-09T07:15:16.217Z","modified":"2026-06-17T03:49:45.713Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-30156","description":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a \"hidden\" user exists.","status":"published","published":"2021-04-09T07:15:16.217Z","modified":"2026-10-24T10:30:16.5671627Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:19.483607Z"},{"id":"UBUNTU-CVE-2021-30156","description":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a \"hidden\" user exists.","status":"published","published":"2021-04-09T07:15:00Z","modified":"2026-10-17T12:56:19.742879364Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"id":"BIT-mediawiki-2021-30156","description":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a \"hidden\" user exists.","status":"published","published":"2024-03-06T11:12:43.9Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}