A xerces-c security update has been released for CentOS 7.

CentOS Errata and Security Advisory 2020:0704 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:0704

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

x86_64:
d92aa24ca95f4fb1255591a78295226f9d85a2822740448fb901241e823e3fa9 xerces-c-3.1.1-10.el7_7.i686.rpm
7981b58ca2dffdde00f5ff4284984b087ae3e5aae2b67bbdf9f41113d246c492 xerces-c-3.1.1-10.el7_7.x86_64.rpm
0bd400b558a3db19fc2970d2db15232b786656bb8f49b8375c50be668e2301ea xerces-c-devel-3.1.1-10.el7_7.i686.rpm
4a6e55a8b0b5622adba0d1e9db864f618d23386c8522ab66509340281f07254c xerces-c-devel-3.1.1-10.el7_7.x86_64.rpm
c6d4fe729eebda97e3d004aa38eb1099806e8d88a7b6a4b04cd9401360b51ecf xerces-c-doc-3.1.1-10.el7_7.noarch.rpm

Source:
498f7fc75bb4c887217b88a468152bf110ac801f572b9dfcaf6e756d83ac900b xerces-c-3.1.1-10.el7_7.src.rpm