Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 91.9.0.
Security Fix(es):
Mozilla: Bypassing permission prompt in nested browsing contexts (CVE-2022-29909)
Mozilla: iframe Sandbox bypass (CVE-2022-29911)
Mozilla: Fullscreen notification bypass using popups (CVE-2022-29914)
Mozilla: Leaking browser history with CSS variables (CVE-2022-29916)
Mozilla: Memory safety bugs fixed in Firefox 100 and Firefox ESR 91.9 (CVE-2022-29917)
Mozilla: Reader mode bypassed SameSite cookies (CVE-2022-29912)
Mozilla: Speech Synthesis feature not properly disabled (CVE-2022-29913)
Mozilla: Incorrect security status shown after viewing an attached email (CVE-2022-1520)
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.