Skip to content
Threat Feed
Subscribe

Product

HMailServer (6.3.6, 6.3.7)

1 brief RSS
low advisory

Progressive Robot hMailServer: Denial of Service via JSON reader algorithmic complexity (CVE-2026-126623)

A vulnerability in the JSON reader of Progressive Robot hMailServer versions 6.3.6 and 6.3.7 allows remote unauthenticated attackers to cause a denial of service by sending specifically crafted JSON objects that trigger high CPU utilization.

hMailServer
1t 1c