Hmailserver Exploit Github Fix Jun 2026

According to the repository, the exploit works by sending a specially crafted HTTP request to the Hmailserver web interface. The request contains a malicious payload that is executed on the server, allowing the attacker to gain remote access.

If a user has access to the hMailServer Administrator GUI (but not Windows Admin rights), they can configure a script to run a malicious file. Since the hMailServer service usually runs as , the script executes with full administrative authority. GitHub Context: hmailserver exploit github