Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.5.0. Security Fix(es): * Mozilla: Iframe sandbox bypass with XSLT (CVE-2021-4140) * Mozilla: Race condition when playing audio files (CVE-2022-22737) * Mozilla: Heap-buffer-overflow in blendGaussianBlur (CVE-2022-22738) * Mozilla: Use-after-free of ChannelEventQueue::mOwner (CVE-2022-22740) * Mozilla: Browser window spoof using fullscreen mode (CVE-2022-22741) * Mozilla: Out-of-bounds memory access when inserting text in edit mode (CVE-2022-22742) * Mozilla: Browser window spoof using fullscreen mode (CVE-2022-22743) * Mozilla: Memory safety bugs fixed in Firefox 96 and Firefox ESR 91.5 (CVE-2022-22751) * Mozilla: Leaking cross-origin URLs through securitypolicyviolation event (CVE-2022-22745) * Mozilla: Spoofed origin on external protocol launch dialog (CVE-2022-22748) * Mozilla: Missing throttling on external protocol launch dialog (CVE-2022-22739) * Mozilla: Crash when handling empty pkcs7 sequence (CVE-2022-22747) 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.