Provide references for CVE-2021-21431.
Where can I find more information about CVE-2021-21431?
References are available at: https://pypi.org/project/sopel-plugins.channelmgnt/, https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m, https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856.