A thunderbird security update has been released for CentOS 7.

CESA-2022:4891 Important CentOS 7 thunderbird Security Update

CentOS Errata and Security Advisory 2022:4891 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2022:4891

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

x86_64:
70147742c172a9a706e38cf38eb04c08145498f9822bed40df6a19a4dd171abf thunderbird-91.10.0-1.el7.centos.x86_64.rpm

Source:
854eb43f0aa768fe66634a167bc66f112f78d9f9db72380fe3b28dc6170b9d66 thunderbird-91.10.0-1.el7.centos.src.rpm