CVE-2026-103649 | Progressive Robot hMailServer up to 6.3.5 MTA-STS Policy Fetch resource consumption

October 8, 2026 Yanac

A vulnerability was found in Progressive Robot hMailServer up to 6.3.5. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component MTA-STS Policy Fetch. Such manipulation leads to resource consumption.

This vulnerability is documented as CVE-2026-103649. The attack can be executed remotely. There is not any exploit available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More