Provide references for CVE-2021-3690.
Where can I find more information about CVE-2021-3690?
References are available at: https://issues.redhat.com/browse/UNDERTOW-1935, https://bugzilla.redhat.com/show_bug.cgi?id=1991299, https://access.redhat.com/security/cve/CVE-2021-3690, https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877.