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CVE-2026-27602— Modoboa has an OS Command Injection

Quick assessment

Affected
modoboa modoboa
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.

Modoboa是Modoboa个人开发者的一个邮件托管和管理平台。 Modoboa 2.7.1之前版本存在操作系统命令注入漏洞，该漏洞源于exec_cmd函数始终以shell=True运行子进程调用且未清理域名输入，可能导致执行任意操作系统命令。

CVSS 7.2 · High EPSS 0.69% · P51

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-27602

Vulnerability Information
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Vulnerability Title
Modoboa has an OS Command Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Modoboa is a mail hosting and management platform. Prior to version 2.7.1, `exec_cmd()` in `modoboa/lib/sysutils.py` always runs subprocess calls with `shell=True`. Since domain names flow directly into shell command strings without any sanitization, a Reseller or SuperAdmin can include shell metacharacters in a domain name to run arbitrary OS commands on the server. Version 2.7.1 patches the issue.
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
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Modoboa 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Modoboa是Modoboa个人开发者的一个邮件托管和管理平台。 Modoboa 2.7.1之前版本存在操作系统命令注入漏洞，该漏洞源于exec_cmd函数始终以shell=True运行子进程调用且未清理域名输入，可能导致执行任意操作系统命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
modoboa modoboa < 2.7.1 -

II. Public POCs for CVE-2026-27602

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III. Intelligence Information for CVE-2026-27602

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Patches & Fixes for CVE-2026-27602 (1)

Vendor Advisories for CVE-2026-27602 (1)

Vendor Pages for CVE-2026-27602 (1)

IV. Related Vulnerabilities

Same product: modoboa
Same vendor: modoboa
Same weakness: CWE-78

V. Comments for CVE-2026-27602

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