Mozilla has fixed multiple vulnerabilities in the Thunderbird email client.
Version 188.8.131.52 fixes eight vulnerabilities, six of which are rated as moderate. The moderate flaws cover code execution risks (in a CSS reference counter and ScriptLoader component of Thunderbird) and memory corruption flaws.
Firefox 184.108.40.206 is defined as a critical update but Thunderbird 220.127.116.11 is less important.
Nonetheless, security watchers at the Internet Storm Centre advise Thunderbird users to apply to security and stability update sooner rather than later. ®