{"id":"CVE-2020-10534","details":"In the GlobalBlocking extension before 2020-03-10 for MediaWiki through 1.34.0, an issue related to IP range evaluation resulted in blocked users re-gaining escalated privileges. This is related to the case in which an IP address is contained in two ranges, one of which is locally disabled.","aliases":["BIT-mediawiki-2020-10534"],"modified":"2026-07-08T16:08:51.271345Z","published":"2020-03-12T23:15:12.233Z","references":[{"type":"ADVISORY","url":"https://phabricator.wikimedia.org/T229731"},{"type":"FIX","url":"https://gerrit.wikimedia.org/r/#/q/I9cc5fb2c08c78bbd797a5fc6d89f4577c8cc118b"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"29977ebe4c05cab4cac46fd1a8459e27f50fb153"}],"database_specific":{"cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.34.0"}],"source":"CPE_RANGE"}}],"versions":["1.34.0","1.34.0-rc.1","1.34.0-rc.0","test-hashar-for-ci","1.6.0","1.5.0beta4","1.5.0beta3","1.5.0beta2","1.5.0beta1","1.5.0alpha2","1.5.0alpha1","1.3.0beta1","1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10534.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}