A thunderbird security update has been released for CentOS 7.

CESA-2022:6169 Important CentOS 7 thunderbird Security Update

CentOS Errata and Security Advisory 2022:6169 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2022:6169

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
1c34f59825eecb09675665b804b5fed5cfba3340912d9fd887d39770e7d0ae60 thunderbird-91.13.0-1.el7.centos.x86_64.rpm

Source:
5c4f52bbfa393aff1f950d063f312b54c9056a742ab1ab6a6b238b32dd487b2b thunderbird-91.13.0-1.el7.centos.src.rpm