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CVE-2024-29180— webpack-dev-middleware Path Traversal vulnerability

Quick assessment

Affected
webpack webpack-dev-middleware
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.

webpack-dev-middleware是webpack开源的一个 express 风格的开发中间件。用于 webpack 捆绑包，并允许提供从 webpack 发出的文件。 webpack-dev-middleware 7.1.0、6.1.2 和 5.3.4 之前版本存在安全漏洞，该漏洞源于webpack -dev-middleware中间件在返回本地文件之前没有充分验证提供的 URL 地址，导致路径遍历。

CVSS 7.4 · High EPSS 1.23% · P68
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I. Basic Information for CVE-2024-29180

Vulnerability Information
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Vulnerability Title
webpack-dev-middleware Path Traversal vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Prior to versions 7.1.0, 6.1.2, and 5.3.4, the webpack-dev-middleware development middleware for devpack does not validate the supplied URL address sufficiently before returning the local file. It is possible to access any file on the developer's machine. The middleware can either work with the physical filesystem when reading the files or it can use a virtualized in-memory `memfs` filesystem. If `writeToDisk` configuration option is set to `true`, the physical filesystem is used. The `getFilenameFromUrl` method is used to parse URL and build the local file path. The public path prefix is stripped from the URL, and the `unsecaped` path suffix is appended to the `outputPath`. As the URL is not unescaped and normalized automatically before calling the midlleware, it is possible to use `%2e` and `%2f` sequences to perform path traversal attack. Developers using `webpack-dev-server` or `webpack-dev-middleware` are affected by the issue. When the project is started, an attacker might access any file on the developer's machine and exfiltrate the content. If the development server is listening on a public IP address (or `0.0.0.0`), an attacker on the local network can access the local files without any interaction from the victim (direct connection to the port). If the server allows access from third-party domains, an attacker can send a malicious link to the victim. When visited, the client side script can connect to the local server and exfiltrate the local files. Starting with fixed versions 7.1.0, 6.1.2, and 5.3.4, the URL is unescaped and normalized before any further processing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
webpack-dev-middleware 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
webpack-dev-middleware是webpack开源的一个 express 风格的开发中间件。用于 webpack 捆绑包，并允许提供从 webpack 发出的文件。 webpack-dev-middleware 7.1.0、6.1.2 和 5.3.4 之前版本存在安全漏洞，该漏洞源于webpack -dev-middleware中间件在返回本地文件之前没有充分验证提供的 URL 地址，导致路径遍历。
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
webpack webpack-dev-middleware >= 7.0.0, < 7.1.0 -

II. Public POCs for CVE-2024-29180

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 23757 chars
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III. Intelligence Information for CVE-2024-29180

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Patches & Fixes for CVE-2024-29180 (3)

Vendor Advisories for CVE-2024-29180 (1)

Other References for CVE-2024-29180 (5)

IV. Related Vulnerabilities

Same vendor: webpack
Same weakness: CWE-22

V. Comments for CVE-2024-29180

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