A firefox security update has been released for CentOS 7.

CESA-2022:0124 Important CentOS 7 firefox Security Update

CentOS Errata and Security Advisory 2022:0124 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2022:0124

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

x86_64:
42e22ddc4f5145c86fda06a008ba1415e8c40c3caa32ca21f81ce460fa3e2bf5 firefox-91.5.0-1.el7.centos.x86_64.rpm

Source:
37785df2875c5eb6c436ca5e15daab86f16b8bad3c9cd21a246184c5562ec843 firefox-91.5.0-1.el7.centos.src.rpm