CVE-2026-40874

MEDIUM EPSS 6.7%

Published Apr 21, 20262mo ago · Modified Jun 17, 20261w ago

6.0 CVSS 4.0

Medium

Published Apr 21, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, no administrator verification takes place when deleting Forwarding Hosts with `/api/v1/delete/fwdhost`. Any authenticated user can call this API. Checks are only applied for edit/add actions, but deletion can still significantly disrupt the mail service. Version 2026-03b fixes the vulnerability.

CVSS Details

Base Score

6.0

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity High

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

6.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-284

References 1

github.com https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-jjxh-rm7p-hjc3

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.