DSA 4571-1 updated Thunderbird to the 68.x series, which is incompatible
with the Enigmail release shipped in Debian Buster.
For the stable distribution (buster), this problem has been fixed in
version 2:2.1.3+ds1-4~deb10u2.
We recommend that you upgrade your enigmail packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Get the latest Linux and open source security news straight to your inbox.