---
id: CVE-2026-49217
title: Mailu is a mail server as a set of Docker images
summary: >-
  Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52,
  a missing authorization check in the Mailu admin REST API allows any
  unauthenticated attacker to remove any potential IP restriction or update the
  comment fie…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-306
published: '2026-08-20'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:09:01.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-49217'
references:
  - url: 'https://github.com/Mailu/Mailu/security/advisories/GHSA-2w8v-6xr5-g9gh'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00358
epssPercentile: 0.26766
ingestedAt: '2026-09-18T20:51:25.647Z'
---

## Overview

Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52, a missing authorization check in the Mailu admin REST API allows any unauthenticated attacker to remove any potential IP restriction or update the comment field from any existing user token provided the REST API is enabled. Upgrade to Mailu 2024.06.52 to receive a patch or, as a workaround, turn the REST API off.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.