A Firefox security update has been released for CentOS 6

CentOS Errata and Security Advisory 2019:3281 Critical
Upstream details at : https://access.redhat.com/errata/RHSA-2019:3281 
The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename )
i386:
2c85c2f5ad6eb26c694c44e0d93e304bba0e5acee0b2d85f28fbaf05097d4d8a firefox-68.2.0-4.el6.centos.i686.rpm
x86_64:
2c85c2f5ad6eb26c694c44e0d93e304bba0e5acee0b2d85f28fbaf05097d4d8a firefox-68.2.0-4.el6.centos.i686.rpm
a820d6ca764fb01eb27179baf01b844157f800a2ddca23e64781a3345077c803 firefox-68.2.0-4.el6.centos.x86_64.rpm
Source:
4b8e11d5983930eb41fd33e008383ced83791edea1fb1dd07026d032504590ed firefox-68.2.0-4.el6.centos.src.rpm