Provide references for CVE-2021-4171.
Where can I find more information about CVE-2021-4171?
References are available at: https://huntr.dev/bounties/1117f439-133c-4563-afb2-6cd80607bd5c, https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce.