Provide references for CVE-2021-3989.
Where can I find more information about CVE-2021-3989?
References are available at: https://huntr.dev/bounties/ffc61eff-efea-42c5-92c2-e043fdf904d5, https://github.com/star7th/showdoc/commit/335afc7ed6d6627c3d0434aa9acc168c77117614.