A libxml2 security update has been released for CentOS 7.

CESA-2020:3996 Moderate CentOS 7 libxml2 Security Update

CentOS Errata and Security Advisory 2020:3996 Moderate

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:3996

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

x86_64:
6e1413f213a7c818dc679fc121435a30906e97b4db03211f3cd23acf9e35b88b libxml2-2.9.1-6.el7.5.i686.rpm
865bb89dcd4d8816e485ab34a083b55c7d4056ac265766974695a87da62d8aee libxml2-2.9.1-6.el7.5.x86_64.rpm
bede65036dfee6105ded35adb1c299002018a1016e9efd4163446d8e6a92bfcc libxml2-devel-2.9.1-6.el7.5.i686.rpm
d424fac47526dc6b037adfd66b2ff2ba1e1395086399d34a1b862222e961c079 libxml2-devel-2.9.1-6.el7.5.x86_64.rpm
a0c3a8dbbc209a90df3f8f2185925585b61c9809b9f26c087201f7c8d64a1f05 libxml2-python-2.9.1-6.el7.5.x86_64.rpm
24b248d1220fef75f61061cd2400aad329970e06b2f254507cdd35348d968aa0 libxml2-static-2.9.1-6.el7.5.i686.rpm
c62e34aa51c1c89400b007376b014e42f551c284ffea7d077883fb2cf5673bd8 libxml2-static-2.9.1-6.el7.5.x86_64.rpm

Source:
399a2832de9392b5c1d4ded2ed1e1f983b0664717d04ba633bcefb7af04f399b libxml2-2.9.1-6.el7.5.src.rpm