Provide references for CVE-2021-3921.
Where can I find more information about CVE-2021-3921?
References are available at: https://huntr.dev/bounties/724d3fd5-9f04-45c4-98d6-35a7d15468f5, https://github.com/firefly-iii/firefly-iii/commit/47fa9e39561a9ec9e210e4023d090a7b33381684.