Incorrect security status shown after viewing an attached email. (CVE-2022-1520) Fullscreen notification bypass using popups. (CVE-2022-29914) Bypassing permission prompt in nested browsing contexts. (CVE-2022-29909) Leaking browser history with CSS variables. (CVE-2022-29916) iframe sandbox bypass. (CVE-2022-29911) Reader mode bypassed SameSite cookies. (CVE-2022-29912) Speech Synthesis feature not properly disabled. (CVE-2022-29913) Memory safety bugs fixed in Thunderbird 91.9. (CVE-2022-29917)