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

CEBA-2021:4791 CentOS 7 pki-core BugFix Update

CentOS Errata and Bugfix Advisory 2021:4791

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:4791

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

x86_64:
0da377da9a9dc6f3210ae58f9365d1e379b41bfbc986639c5cb7df02de772356 pki-base-10.5.18-18.el7_9.noarch.rpm
102ed9eedebeacd4ea5f6fc19a2a0cffb500ccb7516b4f616a67ee86654acde1 pki-base-java-10.5.18-18.el7_9.noarch.rpm
48f161dd4b8ad99c1d1c53c15b3b1e64dea4116e9347fd9464c14ac1742ff5cd pki-ca-10.5.18-18.el7_9.noarch.rpm
be04d6f2b74a87abab03f3e5db7bd69c9c3aba89bf5aeaf5464dfb3e90027fe0 pki-javadoc-10.5.18-18.el7_9.noarch.rpm
c73585577567169544907d481ba9e354f44184d1e11e8bddbfc58e96334f4a21 pki-kra-10.5.18-18.el7_9.noarch.rpm
d8752f8190b36bb9dd01e3568f7822c9a11fbce472408c4206c1a371ea109c53 pki-server-10.5.18-18.el7_9.noarch.rpm
42cf93b353c32a2f1ee4496369b7f3181e00c033475ee1a6ada5dd1706c96a78 pki-symkey-10.5.18-18.el7_9.x86_64.rpm
b10e3c319490493ec81ce895694bf20ebddb48ec604b6a5d8d41cae60cbe4ada pki-tools-10.5.18-18.el7_9.x86_64.rpm

Source:
9d69381f9d57b43469dcf5eb444e641e4d2cbfa89bb2378ea57939cb839a0310 pki-core-10.5.18-18.el7_9.src.rpm