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.

INFO

Published Date :

2026-04-21T19:17:45.306Z

Last Modified :

2026-04-21T19:53:36.285Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40874 vulnerability.

Vendors Products
Mailcow
  • Mailcow Dockerized
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40874.

URL Resource
https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-jjxh-rm7p-hjc3 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability