The Growing Security Risk of Legacy Mail Servers: hMailServer in 2026 For years, hMailServer
Introduction to HMailServer
Hmailserver Exploit: A GitHub Vulnerability hmailserver exploit github
The exploit involves crafting a specially designed email that contains malicious code. When the email is processed by the HMailServer, the malicious code is executed, allowing the attacker to gain control of the server. The vulnerability is caused by the lack of proper input validation and sanitization of email headers. The Growing Security Risk of Legacy Mail Servers:
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Cross-Site Scripting (XSS): Often found in the PHP-based web administration tools associated with hMailServer, leading to session hijacking.