CVE-2026-107575

Inefficient algorithmic complexity in the SPF macro expansion of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to consume worker-thread time by publishing a crafted SPF record. RFC 7208 section 7.1 requires a name too long to look up to lose whole labels...

EUVD-2026-94857

Inefficient algorithmic complexity in the SPF macro expansion of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to consume worker-thread time by publishing a crafted SPF record. RFC 7208 section 7.1 requires a name too long to look up to lose whole labels...

CVE-2026-107575

Progressive Robot hMailServer versions 6.3.4 and 6.3.5 are vulnerable to an inefficient algorithmic complexity flaw in the SPF macro expansion. A remote unauthenticated attacker can consume worker-thread time by publishing a crafted SPF record where the domain-spec expands via macros to a name ex...

CVE-2026-107575 Inefficient Algorithmic Complexity in hMailServer

Inefficient algorithmic complexity in the SPF macro expansion of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to consume worker-thread time by publishing a crafted SPF record. RFC 7208 section 7.1 requires a name too long to look up to lose whole labels...