CVE-2019-9795
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66. Date published : 2019-04-26 https://bugzilla.mozilla.org/show_bug.cgi?id=1514682