Provide references for CVE-2021-23165.
Where can I find more information about CVE-2021-23165?
References are available at: https://github.com/michaelrsweet/htmldoc/issues/413, https://bugzilla.redhat.com/show_bug.cgi?id=1967014, https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f, https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f.patch.