CVE-2026-107579

Inefficient algorithmic complexity in the bounce and complaint processing of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to stop mail delivery by sending messages, when bounce processing or complaint processing is enabled or a mailing list is managed by...

CVE-2026-107579

Progressive Robot hMailServer versions 6.3.4 and 6.3.5 are vulnerable to a high-severity denial-of-service (DoS) condition due to inefficient algorithmic complexity in bounce and complaint processing. When bounce processing, complaint processing, or mailing list management is enabled, an unauthen...

EUVD-2026-94861

Inefficient algorithmic complexity in the bounce and complaint processing of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to stop mail delivery by sending messages, when bounce processing or complaint processing is enabled or a mailing list is managed by...