CVE-2017-7798

The Developer Tools feature suffers from a XUL injection vulnerability due to improper sanitization of the web page source code. In the worst case, this could allow arbitrary code execution when opening a malicious page with the style editor tool. This vulnerability affects Firefox ESR < 52.3 and Firefox < 55. Date published : 2018-06-11 http://www.securityfocus.com/bid/100198

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1371586%2C1372112