CVE-2026-86008

Mailu domain managers can take over higher-privileged accounts

7.2 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.31%Unchanged since Oct 17, 2026

What each source reports

CVE List Score used 7.2

Mailu domain managers can take over higher-privileged accounts

Record: CVE-2026-86008
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-285, CWE-269
Updated: 2026-11-02

EUVDEUVD-2026-102921 7.2

Record: EUVD-2026-102921
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

NVD 7.2

Record: CVE-2026-86008
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269, CWE-285
Updated: 2026-11-02

OSV 7.2

Mailu domain managers can take over higher-privileged accounts

Record: CVE-2026-86008
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269, CWE-285
Updated: 2026-11-02

Affected products

mailu

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-86008 is a high vulnerability (CVSS 7.2) in Mailu, published October 16, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 24th percentile. No source names a fixed version.