Description
In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).
Remediation
References
https://nifi.apache.org/security#CVE-2020-13940
Related Vulnerabilities
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CVE-2023-24998 Vulnerability in maven package org.apache.tomcat:tomcat-util
CVE-2018-8042 Vulnerability in maven package org.apache.ambari:ambari-agent