Current implementation of Quay/Clair 3.5.2 creates links to published erratas provided by Red Hat. Unfortunately the link to those URLs also have the link to the CVEs appended (separated with a space). This results in a 404 when clicking on that link.
The links to errata and CVE should be separated.
The link address point to the following: https://access.redhat.com/errata/RHSA-2021:2171%20https://access.redhat.com/security/cve/CVE-2021-27219