{"id":"CVE-2021-45472","details":"In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.","aliases":["BIT-mediawiki-2021-45472"],"modified":"2026-07-08T06:00:06.777942288Z","published":"2021-12-24T02:15:07.350Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"35"},{"last_affected":"35"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/"},{"type":"ADVISORY","url":"https://gerrit.wikimedia.org/r/q/I37ece1dfdc80d38055067c9c4fa73ba591acd8bd"},{"type":"ADVISORY","url":"https://phabricator.wikimedia.org/T297570"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"4533777d189c3844688b9ce5604e0b70692935f4"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.37"}]}}],"versions":["REL1_37","1.37.6","1.37.5","1.37.4","1.37.3","1.37.2","1.37.1","1.37.0","1.37.0-rc.2","1.37.0-rc.1","1.37.0-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-2021-45472.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}