Provide references for CVE-2021-3976.
Where can I find more information about CVE-2021-3976?
References are available at: https://huntr.dev/bounties/0567048a-118c-42ec-9f94-b55533017406, https://github.com/kevinpapst/kimai2/commit/b28e9c120c87222e21a238f1b03a609d6a5d506e.