Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 60.9.0. Security Fix: * Mozilla: Covert Content Attack on S/MIME encryption using a crafted multipart/alternative message * Mozilla: Memory safety bugs fixed in Firefox 69, Firefox ESR 68.1, and Firefox ESR 60.9 * Mozilla: Same-origin policy violation with SVG filters and canvas to steal cross-origin images * Mozilla: XSS by breaking out of title and textarea elements using innerHTML * Mozilla: Use-after-free while manipulating video * Mozilla: Use-after-free while extracting a key value in IndexedDB * Mozilla: Cross-origin access to unload event attributes 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.