- Description
- webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-server users' source code may be stolen when they access a malicious web site. Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject a malicious script in their site and run the script. Note that the attacker has to know the port and the output entrypoint script path. Combined with prototype pollution, the attacker can get a reference to the webpack runtime variables. By using `Function::toString` against the values in `__webpack_modules__`, the attacker can get the source code. Version 5.2.1 contains a patch for the issue.
- Source
- security-advisories@github.com
- NVD status
- Awaiting Analysis
CVSS 3.1
- Type
- Secondary
- Base score
- 5.3
- Impact score
- 3.6
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-749
- Hype score
- Not currently trending
🔴 Webpack, Source Code Disclosure via Prototype Pollution, #CVE-2025-30359 (Critical) https://t.co/Hr3nUOck15
@dailycve
4 Jun 2025
7 Impressions
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CVE-2025-30359 Source Code Exposure via Malicious Script Injection in webpack-dev-server Pre-5.2.1 https://t.co/thjf8OGrsr
@VulmonFeeds
4 Jun 2025
29 Impressions
0 Retweets
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CVE-2025-30359 webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-server users' source code m… https://t.co/f6bQ4IzTio
@CVEnew
3 Jun 2025
139 Impressions
0 Retweets
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0 Replies
0 Quotes