{"id":"UBUNTU-CVE-2021-44857","details":"An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead.","modified":"2025-07-16T08:27:06.966522Z","published":"2021-12-17T04:15:00Z","withdrawn":"2025-07-18T16:47:04Z","upstream":["CVE-2021-44857"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-44857"},{"type":"REPORT","url":"https://phabricator.wikimedia.org/T297322"},{"type":"REPORT","url":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/QEN3EK4JXAVJMJ5GF3GYOAKNJPEKFQYA/"},{"type":"REPORT","url":"https://github.com/advisories/GHSA-x4wg-g4fv-f8m6"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-44857"}],"affected":[{"package":{"name":"mediawiki","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/mediawiki@1:1.35.5-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.5-1"}]}],"versions":["1:1.35.3-1","1:1.35.4-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"mediawiki","binary_version":"1:1.35.5-1"},{"binary_name":"mediawiki-classes","binary_version":"1:1.35.5-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44857.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}