A thunderbird security update has been released for CentOS 7.

CESA-2023:0817 Important CentOS 7 thunderbird Security Update

CentOS Errata and Security Advisory 2023:0817 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2023:0817

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

x86_64:
5a404e4d0261a2aa45188a169969665640124c8587bfaff7eaa4706a5f16727d thunderbird-102.8.0-2.el7.centos.x86_64.rpm

Source:
903812da24e8377d3a858f8a95f7452a4502456f38cb2017de0d4645cc81671a thunderbird-102.8.0-2.el7.centos.src.rpm