Provide references for CVE-2021-31826.
Where can I find more information about CVE-2021-31826?
References are available at: https://shibboleth.net/community/advisories/secadv_20210426.txt, https://issues.shibboleth.net/jira/browse/SSPCPP-927, https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec, https://bugs.debian.org/987608, https://www.debian.org/security/2021/dsa-4905.