The following errata for CentOS-2 have been built and uploaded the the centos mirror:
RHSA-2004:597-01 Updated mysql packages fix security issues and bugs
Files available: mysql-3.23.58-1.72.1.i386.rpm mysql-devel-3.23.58-1.72.1.i386.rpm mysql-server-3.23.58-1.72.1.i386.rpm
More details are available from the RedHat web site at https://rhn.redhat.com/errata/rh21as-errata.html
The easy way to make sure you are up to date with all the latest patches is to run: # yum update