An openssl security update has been released for CentOS 7.

CESA-2021:3798 Moderate CentOS 7 openssl Security Update

CentOS Errata and Security Advisory 2021:3798 Moderate

Upstream details at :   https://access.redhat.com/errata/RHSA-2021:3798

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

x86_64:
a9775c264bc9077729880ff223db6978a0ee4aae22b8fbdf9d5c6d935f6518a3 openssl-1.0.2k-22.el7_9.x86_64.rpm
bf4623f90ace835b85614e7e022ffcb2427a5b8235c7dedd511d580ac0c878aa openssl-devel-1.0.2k-22.el7_9.i686.rpm
3f51b4953396f40f83ef6281561e6aa2bd69daf5e98921e1562160c40eb64061 openssl-devel-1.0.2k-22.el7_9.x86_64.rpm
4d49a5d533e4c753cbeaf06a490dca1f72f5462a8fa7f3c634484c68241ddc7c openssl-libs-1.0.2k-22.el7_9.i686.rpm
b3004d122d0a738cbff817b9531b9787dcd2e46f3ed06c59e99fd50749720806 openssl-libs-1.0.2k-22.el7_9.x86_64.rpm
60601627ced255e03b49d78f605f8c7726747b2eb27ab5531b5296d0afd1b2ce openssl-perl-1.0.2k-22.el7_9.x86_64.rpm
d8d9646b9eb2ea7556c1afe53b0eacb8fcacd861d66fc82fd1bcecaf2c47e41a openssl-static-1.0.2k-22.el7_9.i686.rpm
2130f82985059fdc1825e34c818c10ce54691d99d56fb5b663cd8452c750913e openssl-static-1.0.2k-22.el7_9.x86_64.rpm

Source:
1465729173440314b8a461c413b59c9e3263b07e83dc095051c77d2c3894bce5 openssl-1.0.2k-22.el7_9.src.rpm