Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0. Security Fix(es): * Mozilla: Memory safety bugs fixed in Firefox 89 and Firefox ESR 78.11 (CVE-2021-29967) * Mozilla: Thunderbird stored OpenPGP secret keys without master password protection (CVE-2021-29956) * Mozilla: Partial protection of inline OpenPGP message not indicated (CVE-2021-29957) 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.