A pki-core bugfix update has been released for CentOS 7.

CEBA-2021:3266 CentOS 7 pki-core BugFix Update

CentOS Errata and Bugfix Advisory 2021:3266

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:3266

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

x86_64:
76cfa65febb7025f91800c11072204ec3748d9a68501cdf0cfde5a6c5404f0e4 pki-base-10.5.18-16.el7_9.noarch.rpm
769518511a9626c3f684d9b19a35320e0bf5eaad8dc6377c966be0005c590641 pki-base-java-10.5.18-16.el7_9.noarch.rpm
f3aaf1422d162735cb3147c5876e2d569c5ab751c3e355d4f973d16250916a4c pki-ca-10.5.18-16.el7_9.noarch.rpm
a3ad033749fd54a7fd723f8b31abd4dea531eae66ff59e0f48a1e7412fd09051 pki-javadoc-10.5.18-16.el7_9.noarch.rpm
231c99ff7648c2fa512b52e36ee21cfb15033bb178cb5c38c37a3928feedec99 pki-kra-10.5.18-16.el7_9.noarch.rpm
49e9c90df2985998052c0402a2bc848b5090e19a31cd9259e1fd77529e6a3505 pki-server-10.5.18-16.el7_9.noarch.rpm
76b9c89c43e25719214415b156394b6c8108b41639e8116895753032c1480241 pki-symkey-10.5.18-16.el7_9.x86_64.rpm
c328c37ab19654e8c75410894318772e2ded988336a832db854b41d7fdb4f144 pki-tools-10.5.18-16.el7_9.x86_64.rpm

Source:
609c32d63ba58a26b2e4ae59ed3e6a3cb4ed54d3ca4de0c00dd2d3aa17429af0 pki-core-10.5.18-16.el7_9.src.rpm