Provide references for CVE-2019-20437.
Where can I find more information about CVE-2019-20437?
References are available at: https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635, https://github.com/cybersecurityworks/Disclosed/issues/20, https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html.