Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0. Security Fix: * Mozilla: Memory safety bugs fixed in Firefox 89 and Firefox ESR 78.11 * Mozilla: Thunderbird stored OpenPGP secret keys without master password protection * Mozilla: Partial protection of inline OpenPGP message not indicated For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.