Provide references for CVE-2021-21425.
Where can I find more information about CVE-2021-21425?
References are available at: https://pentest.blog/unexpected-journey-7-gravcms-unauthenticated-arbitrary-yaml-write-update-leads-to-code-execution/, https://github.com/getgrav/grav-plugin-admin/security/advisories/GHSA-6f53-6qgv-39pj, http://packetstormsecurity.com/files/162283/GravCMS-1.10.7-Remote-Command-Execution.html, http://packetstormsecurity.com/files/162457/GravCMS-1.10.7-Remote-Command-Execution.html.