---
id: CVE-2026-86008
title: Mailu is a mail server distributed as a set of Docker images
summary: >-
  Mailu is a mail server distributed as a set of Docker images. Prior to
  8577c929b4ade04d3cd4210cf036601abd793556, a domain manager targeting an
  administrative account or another domain manager with greater privileges can
  reset passwords o…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
  - CWE-285
vendor: Mailu
product: Mailu
affected:
  - Mailu < 8577c929b4ade04d3cd4210cf036601abd793556
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:17:51.883'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86008'
references:
  - url: >-
      https://github.com/Mailu/Mailu/commit/8577c929b4ade04d3cd4210cf036601abd793556
    label: security-advisories@github.com
  - url: 'https://github.com/Mailu/Mailu/issues/2685'
    label: security-advisories@github.com
  - url: 'https://github.com/Mailu/Mailu/pull/4050'
    label: security-advisories@github.com
  - url: 'https://github.com/Mailu/Mailu/security/advisories/GHSA-9pv5-rm76-3qwj'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00314
epssPercentile: 0.24121
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T16:53:48.473995Z'
ingestedAt: '2026-10-16T17:24:46.896Z'
---

## Overview

Mailu is a mail server distributed as a set of Docker images. Prior to 8577c929b4ade04d3cd4210cf036601abd793556, a domain manager targeting an administrative account or another domain manager with greater privileges can reset passwords or obtain tokens for that account. This authorization failure allows a domain manager to take over a higher-privileged account and exercise that account's permissions. This vulnerability is addressed by commit 8577c929b4ade04d3cd4210cf036601abd793556.

## Remediation

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