Introduction to Mustang XXE Vulnerability The recent discovery of a serious vulnerability in the Mustang platform has raised alarms among system administrators and hosting providers. This flaw, classified as CVE-2025-66372, involves XML External Entity (XXE) exfiltration, which can severely compromise server security. Understanding the Exfiltration Vulnerability Versions of Mustang prior to 2.16.3 are susceptible to […]













