{"id":"CVE-2019-18987","details":"An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki. Once a specific abuse filter has (accidentally or otherwise) been made public, its previous versions can be exposed, thus potentially disclosing private or sensitive information within the filter's definition.","modified":"2026-04-11T20:53:28.794168Z","published":"2019-11-15T06:15:10.333Z","references":[{"type":"ADVISORY","url":"https://www.mediawiki.org/wiki/Extension:AbuseFilter"},{"type":"FIX","url":"https://gerrit.wikimedia.org/r/q/Ic12790bd33982473f77551bde9599ed083a3e1f1"},{"type":"FIX","url":"https://phabricator.wikimedia.org/T237887"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki-extensions-abusefilter","events":[{"introduced":"0"},{"last_affected":"3c2035dd9e2a0dc1398403fe092bcc3a90f5fec6"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.34"}],"source":"CPE_FIELD","cpe":"cpe:2.3:a:mediawiki:abusefilter:*:*:*:*:*:mediawiki:*:*"}}],"versions":["REL1_19","REL1_20","REL1_21","REL1_22","REL1_29","REL1_34"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-18987.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:L/I:N/A:N"}]}