CVE-2026-40874— mailcow: dockerized missing authorization on Forwarding Hosts delete action
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I. Basic Information for CVE-2026-40874
Vulnerability Information
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Vulnerability Title
mailcow: dockerized missing authorization on Forwarding Hosts delete action
Source: NVD (National Vulnerability Database)
Vulnerability Description
mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, no administrator verification takes place when deleting Forwarding Hosts with `/api/v1/delete/fwdhost`. Any authenticated user can call this API. Checks are only applied for edit/add actions, but deletion can still significantly disrupt the mail service. Version 2026-03b fixes the vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
mailcow: dockerized 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mailcow: dockerized是mailcow开源的一个docker化的mailcow应用软件。 mailcow: dockerized 2026-03b之前版本存在访问控制错误漏洞，该漏洞源于删除转发主机时未进行管理员验证，可能导致任何经过身份验证的用户调用此API并严重破坏邮件服务。
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 |
|---|---|---|---|---|
| mailcow | mailcow-dockerized | < 2026-03b | - |
II. Public POCs for CVE-2026-40874
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|---|
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Same Patch Batch · mailcow · 2026-04-21 · 6 CVEs total
| CVE-2026-40871 | 7.2 HIGH | mailcow: dockerized vulnerable to Second Order SQL Injection in quarantine category via AP |
| CVE-2026-40875 | mailcow: dockerized vulnerable to stored XSS in user login history real_rip | |
| CVE-2026-40872 | mailcow: dockerized vulnerable to stored XSS in autodiscover logs email address field | |
| CVE-2026-40873 | mailcow: dockerized vulnerable to stored XSS in Quarantine attachment filenames | |
| CVE-2026-40878 | mailcow-dockerized Login Page has Reflected Parameter Injection / Wrong-Context XSS Escapi |
IV. Related Vulnerabilities
Same product: mailcow-dockerized
- CVE-2026-40878
mailcow-dockerized Login Page has Reflected Parameter Inject - CVE-2026-40875
mailcow: dockerized vulnerable to stored XSS in user login h - CVE-2026-40873
mailcow: dockerized vulnerable to stored XSS in Quarantine a - CVE-2026-40872
mailcow: dockerized vulnerable to stored XSS in autodiscover - CVE-2026-40871
mailcow: dockerized vulnerable to Second Order SQL Injection
Same vendor: mailcow
- CVE-2026-40878
mailcow-dockerized Login Page has Reflected Parameter Inject - CVE-2026-40875
mailcow: dockerized vulnerable to stored XSS in user login h - CVE-2026-40873
mailcow: dockerized vulnerable to stored XSS in Quarantine a - CVE-2026-40872
mailcow: dockerized vulnerable to stored XSS in autodiscover - CVE-2026-40871
mailcow: dockerized vulnerable to Second Order SQL Injection
Same weakness: CWE-284
- CVE-2026-8233
Dotouch XproUPF access control - CVE-2026-42569
phpvms: /importer authorization bypass causing full database - CVE-2026-42205
Avo: Broken Access Control: Unauthorized Execution of Arbitr - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets
V. Comments for CVE-2026-40874
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