webpack-dev-server users' source code may be stolen when they access a malicious web site
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| webpack | webpack-dev-server | affected |
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No data.
No data available yet.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-16767 | webpack-dev-server users' source code may be stolen when they access a malicious web site |
Github GHSA |
GHSA-4v9v-hfq4-rm2v | webpack-dev-server users' source code may be stolen when they access a malicious web site |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.598% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Webpack.js
Webpack.js webpack-dev-server |
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| CPEs | cpe:2.3:a:webpack.js:webpack-dev-server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Webpack.js
Webpack.js webpack-dev-server |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | webpack-dev-server users' source code may be stolen when they access a malicious web site | |
| Weaknesses | CWE-749 | |
| References |
| |
| Metrics |
cvssV3_1
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