CentOS Errata and Security Advisory 2011:1164 Critical
Upstream details at : https://rhn.redhat.com/errata/RHSA-2011-1164.html
The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename )
i386: 80c702049120cadd67af47f28950a1ff firefox-3.6.20-2.el5.centos.i386.rpm
Source: 9c667b19809deae3193c3d618313b49f firefox-3.6.20-2.el5.centos.src.rpm