Provide references for CVE-2021-31828.
Where can I find more information about CVE-2021-31828?
References are available at: https://github.com/opendistro-for-elasticsearch/alerting/pull/353, https://opendistro.github.io/for-elasticsearch-docs/version-history/, https://rotem-bar.com/ssrf-in-open-distro-for-elasticsearch-cve-2021-31828.