Provide references for CVE-2021-4168.
Where can I find more information about CVE-2021-4168?
References are available at: https://huntr.dev/bounties/f14431e2-f1f6-4331-ba91-a4ea8b26be0c, https://github.com/star7th/showdoc/commit/3ff0c85d439ccbdfadeb96b5a52acf6318041109.