WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. This vulnerability affects Firefox < 59.
[ { "events": [ { "introduced": "0" }, { "fixed": "59.0" } ] } ]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-5134.json"