Provide references for CVE-2021-32681.
Where can I find more information about CVE-2021-32681?
References are available at: https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf, https://github.com/wagtail/wagtail/releases/tag/v2.11.8, https://github.com/wagtail/wagtail/releases/tag/v2.12.5, https://github.com/wagtail/wagtail/releases/tag/v2.13.2.