An icu security update has been released for CentOS 7.

CentOS Errata and Security Advisory 2020:0897 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:0897

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

x86_64:
2ca61582c7174625804c4b53eee75b38c60c2bb5c9a674b1b614fa0914467dee icu-50.2-4.el7_7.x86_64.rpm
d3ce75bf83e66f44c24a6d9088a80764cb8b0fdc7b85f0f8b46bfef3eabf56e9 libicu-50.2-4.el7_7.i686.rpm
385bbe52268984f42689f2c26b6a6901a940c33b8ca68f7e0d1ca03524f209ae libicu-50.2-4.el7_7.x86_64.rpm
4c59c5968f836121da8ec28f5b101006e88f246b6f6afa12ca7a35e4b07183f2 libicu-devel-50.2-4.el7_7.i686.rpm
11229d57d8a76782072b2c8ae9adad63b66b08b55a9e0aa236a3a22cddd198c3 libicu-devel-50.2-4.el7_7.x86_64.rpm
87acb5beba01910c55863e6e62e39748f3306430ad77d18196326efa527decee libicu-doc-50.2-4.el7_7.noarch.rpm

Source:
0842de994ebc3dee33d2e3ec5ab01a22b8a92fac685c8986c1a9114e5c485413 icu-50.2-4.el7_7.src.rpm