CVE-2019-11692
A use-after-free vulnerability can occur when listeners are removed from the event listener manager while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7. Date published : 2019-07-23 https://bugzilla.mozilla.org/show_bug.cgi?id=1544670