P4Verified

CVE-2026-107584: hMailServer 6.0.0 to before 6.3.6

CVE-2026-107584. CVSS 3.1 base score 7.4 (HIGH, Vendor/CNA).

Affected technology

hMailServer · 6.0.0 to before 6.3.6
Progressive Robot Ltd

Description’s affected range: through 6.3.5 fails open when applying DANE (RFC 7672) to outbound SMTP delivery

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 7.4/10) rates confidentiality and integrity impact as high; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-08 17:34:54.785263+00:00

CWE: CWE-636
CCR priority: 29.6 /100 (P4)
CVSS 3.1: 7.4 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N · Vendor/CNA
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-08 18:27:24.781324+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 18:34:48.508309+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-107584.html