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CVE-2026-86008— Mailu domain managers can take over higher-privileged accounts

Quick assessment

Affected
Mailu Mailu
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mailu 是一个以 Docker 镜像集形式分发的邮件服务器。在提交 8577c929b4ade04d3cd4210cf036601abd793556 之前，若某个域管理员（domain manager）针对拥有更高权限的管理员账户或另一权限更高的域管理员账户发起操作，即可重置该账户的密码或获取其令牌。此授权缺陷使得域管理员能够接管权限更高的账户，并行使该账户所拥有的权限。该漏洞已在提交 8577c929b4ade04d3cd4210cf036601abd793556 中得到修复。

CVSS 7.2 · High EPSS 0.31% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
Mailu Mailu < 8577c929b4ade04d3cd4210cf036601abd793556 affected
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I. Basic Information for CVE-2026-86008

Vulnerability Information
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Vulnerability Title
Mailu domain managers can take over higher-privileged accounts
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mailu Mailu < 8577c929b4ade04d3cd4210cf036601abd793556 -

II. Public POCs for CVE-2026-86008

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III. Intelligence Information for CVE-2026-86008

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Patches & Fixes for CVE-2026-86008 (2)

Vendor Advisories for CVE-2026-86008 (1)

Other References for CVE-2026-86008 (1)

IV. Related Vulnerabilities

Same product: Mailu
Same vendor: Mailu
Same weakness: CWE-285

V. Comments for CVE-2026-86008

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