GFI MailEssentials prior to version 21.8 is vulnerable to an XML External Entity (XXE) issue. An authenticated and remote attacker can send crafted HTTP requests to read arbitrary system files.CreditsFrycosReferenceshttps://frycos.github.io/vulns4free/2025/04/28/mailessentials.htmlhttps://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releaseshttps://www.vulncheck.com/advisories/gfi-mailessentials-xxe-arbitrary-file-read
