Provide references for CVE-2018-20859.
Where can I find more information about CVE-2018-20859?
References are available at: https://groups.google.com/forum/#%21topic/openedx-announce/wsm5mtUhhME, https://github.com/edx/edx-platform/commit/5b144559fbdba7ff673cc1c165aa2d343e07b6bd.patch, https://patch-diff.githubusercontent.com/raw/edx/edx-platform/pull/18639.patch.