A thunderbird security update has been released for CentOS 7.

CESA-2022:5773 Important CentOS 7 thunderbird Security Update

CentOS Errata and Security Advisory 2022:5773 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2022:5773

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

x86_64:
f009c9c18a2c60a9c998051c6c0a08500ac08b6f4d0b3e130aec02f0bac6afe5 thunderbird-91.12.0-1.el7.centos.x86_64.rpm

Source:
9c9112e014a0add7077187c589967a727d13d57ba457721afdf8dd6691040144 thunderbird-91.12.0-1.el7.centos.src.rpm