Provide references for CVE-2020-26890.
Where can I find more information about CVE-2020-26890?
References are available at: https://github.com/matrix-org/synapse/security/advisories/GHSA-4mp3-385r-v63f, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U34DPP4ZLOEDUY2ZCWOHQPU5GA5LYNUQ/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7YXMMYQP46PYL664JQUXCA3LPBJU7DQ/.