Provide references for CVE-2021-4020.
Where can I find more information about CVE-2021-4020?
References are available at: https://huntr.dev/bounties/9814baa8-7bdd-4e31-a132-d9d15653409e, https://github.com/meetecho/janus-gateway/commit/d3fc00ec803d6c41d8f98908732f44e7f4911a1c.