A thunderbird security update has been released for CentOS 7.

CESA-2022:0850 Important CentOS 7 thunderbird Security Update

CentOS Errata and Security Advisory 2022:0850 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2022:0850

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

x86_64:
d75ace9160c666f8c11b19909fd788117c9134c9ec1c12c636f6a45ee642ed18 thunderbird-91.7.0-2.el7.centos.x86_64.rpm

Source:
f12b857c03422ca4fd610898acf959c554126e0038b0cff81d2fd9466b1532bd thunderbird-91.7.0-2.el7.centos.src.rpm