A rsyslog security update has been released for CentOS 7.

CEBA-2021:2312 CentOS 7 rsyslog BugFix Update

CentOS Errata and Bugfix Advisory 2021:2312

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:2312

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

x86_64:
977e49aa36e447c99e215e9eeb2628e0e19cafb64eca4dbe1affffcfe2ad2c6f rsyslog-8.24.0-57.el7_9.1.x86_64.rpm
65199e9ea2e12be16d067a95704c987d84ddb573ef4d2dca215c5cd3a28b3b2c rsyslog-crypto-8.24.0-57.el7_9.1.x86_64.rpm
99f7afea90a0a26964c80545f90fd551c442f1fdcb3ccdd6be042506650e78d5 rsyslog-doc-8.24.0-57.el7_9.1.noarch.rpm
8ece8095faf9fc05572d63b861d8bc795ed3d56a7c3235a44d3ee07d1403cde5 rsyslog-elasticsearch-8.24.0-57.el7_9.1.x86_64.rpm
763431d569a4717a132d38c72d98eb0656623f04155dc15baf5f8face7a581aa rsyslog-gnutls-8.24.0-57.el7_9.1.x86_64.rpm
412cf05f06bbad13dcf4147fd9d0fe36f85f1ac4e736a1e70cceb3317d6375ed rsyslog-gssapi-8.24.0-57.el7_9.1.x86_64.rpm
e19244daf20ce87cf283cadda5ea9d45bb6c17bfdb674dfeef35d29825c62af2 rsyslog-kafka-8.24.0-57.el7_9.1.x86_64.rpm
998aeda730e4ca3c63ce73e2345ed6e97ec1682e90df490b0e96faff1ebf4665 rsyslog-libdbi-8.24.0-57.el7_9.1.x86_64.rpm
8480c9c162030638d7e1aeafac122629e6446c5a5c93910cdd0ea2bdc51c5597 rsyslog-mmaudit-8.24.0-57.el7_9.1.x86_64.rpm
093f80fc5d8e0da79a3979e52dfdc01e24389db68934cf76c4a575367b63914c rsyslog-mmjsonparse-8.24.0-57.el7_9.1.x86_64.rpm
c81f90a03e1572c395b80f30a24efd34def63ec2a53550ae57b48380ded6bcd5 rsyslog-mmkubernetes-8.24.0-57.el7_9.1.x86_64.rpm
db07f94b0ea8f757e8c7e4e9ab64552d472d4baf724499628c1d7447b4ce574b rsyslog-mmnormalize-8.24.0-57.el7_9.1.x86_64.rpm
13a2da96e0859c06d6b4b719445081c65053460547c38ccf8f0a2c1e06b039cb rsyslog-mmsnmptrapd-8.24.0-57.el7_9.1.x86_64.rpm
1d9cb7ca8c804f9fa970b5e2df8cc163112c6d02f4769316009d22c080bddf91 rsyslog-mysql-8.24.0-57.el7_9.1.x86_64.rpm
7f98ddb94869395b5d09e7f387eb87ae1829dcd23a0e383391bf1b8f7b2a9dfb rsyslog-pgsql-8.24.0-57.el7_9.1.x86_64.rpm
a8c5b5cdea96dc06b0e2bfe64814361d7099d10d8c06277305f17129b0304233 rsyslog-relp-8.24.0-57.el7_9.1.x86_64.rpm
5734c3f66c0d576c4dd6f560daf55c682f147e046ce312efb7cf7c0428164ede rsyslog-snmp-8.24.0-57.el7_9.1.x86_64.rpm
0d30036d6a876fd21fc61439985a43f29d496b4089d41c5fa578c65ecde1d198 rsyslog-udpspoof-8.24.0-57.el7_9.1.x86_64.rpm

Source:
244fe1aacd2f323cac365868ae9642a624de7fdd0e70caa8d1081acb00d57568 rsyslog-8.24.0-57.el7_9.1.src.rpm