Provide references for CVE-2021-21328.
Where can I find more information about CVE-2021-21328?
References are available at: https://github.com/vapor/vapor/security/advisories/GHSA-gcj9-jj38-hwmc, https://github.com/vapor/vapor/commit/e3aa712508db2854ac0ab905696c65fd88fa7e23, https://github.com/vapor/vapor/releases/tag/4.40.1, https://vapor.codes/.