CentOS Errata and Security Advisory 2007:0968
https://rhn.redhat.com/errata/RHSA-2007-0968.html
The following updated files have been uploaded and are currently syncing to the mirrors:
i386: pcre-4.5-4.el4_5.1.i386.rpm pcre-devel-4.5-4.el4_5.1.i386.rpm
src: pcre-4.5-4.el4_5.1.src.rpm