Provide references for CVE-2021-4188.
Where can I find more information about CVE-2021-4188?
References are available at: https://huntr.dev/bounties/78533fb9-f3e0-47c2-86dc-d1f96d5bea28, https://github.com/mruby/mruby/commit/27d1e0132a0804581dca28df042e7047fd27eaa8.