CVE-2026-40874CWE-284

mailcow: dockerized missing authorization on Forwarding Hosts delete action

Medium · published April 21, 2026

CVSS v4.0
6.0
EPSS
0%
Percentile
18.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.0 · MEDIUM
Vector
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
EPSS
0.00271 · 18.3th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-04-21T19:17Z
EPSS history
Timeline
  • 21 APR 19:17Z
    mailcow: dockerized missing authorization on Forwarding Hosts delete action
    cvelistv5