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Cpe:2.3:a:progressive_robot:hmailserver:6.3.6:*:*:*:*:*:*:*

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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