CVE-2023-6710 (https://access.redhat.com/security/cve/CVE-2023-6710): A flaw was found in the mod_proxy_cluster in the Apache server. This issue may allow a malicious user to add a script in the 'alias' parameter in the URL to trigger the stored cross-site scripting (XSS) vulnerability. By adding a script on the alias parameter on the URL, it adds a new virtual host and adds the script to the cluster-manager page. The impact of this vulnerability is considered as Low, as the cluster_manager URL should not be exposed outside and is protected by user/password. No published info from upstream, just a CVE from RedHat.
mod_proxy_cluster is a separate module that is distributed independent of the Apache httpd server and not packaged in Gentoo. https://github.com/modcluster/mod_proxy_cluster
