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CVE-2025-43919

Quick assessment

Affected
GNU Mailman
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU Mailman是美国GNU社区的一套免费的用于管理电子邮件讨论和电子邮件列表的软件。该软件可与Web项目集成，使用户方便管理邮件订阅帐号，并提供内置归档、自动转发处理、内容过滤和反垃圾过滤器等功能。 GNU Mailman 2.1.39版本存在安全漏洞，该漏洞源于目录遍历，可能导致任意文件读取。

CVSS 5.8 · Medium EPSS 1.38% · P71
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I. Basic Information for CVE-2025-43919

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the username parameter. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
路径遍历：’../filedir’
Source: CVE Program / CVE List V5
Vulnerability Title
GNU Mailman 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU Mailman是美国GNU社区的一套免费的用于管理电子邮件讨论和电子邮件列表的软件。该软件可与Web项目集成，使用户方便管理邮件订阅帐号，并提供内置归档、自动转发处理、内容过滤和反垃圾过滤器等功能。 GNU Mailman 2.1.39版本存在安全漏洞，该漏洞源于目录遍历，可能导致任意文件读取。
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
GNU Mailman 2.1.39 -

II. Public POCs for CVE-2025-43919

# POC Description Source Link Shenlong Link
1 None https://github.com/0NYX-MY7H/CVE-2025-43919 POC Details
2 A new vulnerability has been discovered in GNU Mailman 2.1.39, bundled with cPanel/WHM, allowing unauthenticated remote attackers to read arbitrary files on the server via a directory traversal flaw. https://github.com/cybersecplayground/CVE-2025-43919-POC POC Details
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III. Intelligence Information for CVE-2025-43919

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Proof of Concept for CVE-2025-43919 (1)

Mailing List Discussions for CVE-2025-43919 (1)

Vendor Pages for CVE-2025-43919 (1)

Other References for CVE-2025-43919 (1)

Same Patch Batch · GNU · 2025-04-20 · 3 CVEs total

CVE-2025-43920 5.4 MEDIUM GNU Mailman 安全漏洞
CVE-2025-43921 5.3 MEDIUM GNU Mailman 安全漏洞

IV. Related Vulnerabilities

Same product: Mailman
Same vendor: GNU
Same weakness: CWE-24

V. Comments for CVE-2025-43919

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