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CVE-2026-102337— Webmin: SSRF exploit in Upload and Download and File Manager modules

Quick assessment

Affected
webmin webmin
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.

Webmin 是一款面向类 Unix 服务器的基于 Web 的系统管理工具。在 2.652 版本之前，拥有文件管理器或“上传与下载”模块访问权限的非受信用户，可利用 Webmin 的服务器端 URL 下载功能将下载目标指向非公开网络地址，因为下载目标并未根据解析后的 IP 地址进行限制。这使得攻击者能够请求访问未经身份验证的内网服务，或访问云服务商的实例元数据端点（这些资源通常无法从用户自身系统直接访问）。该问题已在 2.652 版本中修复。

CVSS 4.9 · Medium
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I. Basic Information for CVE-2026-102337

Vulnerability Information
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Vulnerability Title
Webmin: SSRF exploit in Upload and Download and File Manager modules
Source: CVE Program / CVE List V5
Vulnerability Description
Webmin is a web-based system administration tool for Unix-like servers. Prior to 2.652, untrusted users with access to the File Manager or Upload and Download modules can direct Webmin's server-side URL download functionality to non-public network addresses because download destinations are not restricted by resolved IP address. This allows requests to unauthenticated intranet services or cloud-provider instance metadata endpoints that are inaccessible from the user's own system. This issue is fixed in 2.652.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
webmin webmin < 2.652 -

II. Public POCs for CVE-2026-102337

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 12608 chars
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III. Intelligence Information for CVE-2026-102337

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Other References for CVE-2026-102337 (6)

IV. Related Vulnerabilities

Same product: webmin
Same vendor: webmin
Same weakness: CWE-918