ApiParse in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to bypass intended per-title read restrictions via a parse action to api.php.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-6331.json"