XML External Entity (XXE) vulnerability in the file based service provider creation feature of the Management Console in WSO2 API Manager 2.6.0 3.0.0 3.1.0 3.2.0 and 4.0.0; and WSO2 IS as Key Manager 5.7.0 5.9.0 and 5.10.0; and WSO2 Identity Server 5.7.0 5.8.0 5.9.0 5.10.0 and 5.11.0. Allows attackers to gain read access to sensitive information or cause a denial of service via crafted GET requests.