Provide references for CVE-2021-4017.
Where can I find more information about CVE-2021-4017?
References are available at: https://huntr.dev/bounties/1d8439e8-b3f7-40f8-8b30-f9cb05ff2bcd, https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871.