Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 68.4.1.
Mozilla: IonMonkey type confusion with StoreElementHole and FallibleStoreElement (CVE-2019-17026)
Mozilla: Bypass of @namespace CSS sanitization during pasting (CVE-2019-17016)
Mozilla: Type Confusion in XPCVariant.cpp (CVE-2019-17017)
Mozilla: Memory safety bugs fixed in Firefox 72 and Firefox ESR 68.4 (CVE-2019-17024)
Mozilla: CSS sanitization does not escape HTML tags (CVE-2019-17022)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.