Origin Validation Error Affecting org.webjars.npm:webpack-dev-server package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Jun 2025
- disclosed3 Jun 2025
- creditsapphi-red
Introduced: 3 Jun 2025
NewCVE-2025-30360 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
org.webjars.npm:webpack-dev-server is an Uses webpack with a development server that provides live reloading. It should be used for development only.
Affected versions of this package are vulnerable to Origin Validation Error via theOrigin header, which allows IP address origins to connect to WebSocket in the checkHeader function. An attacker can obtain sensitive data when accessing a malicious website with a non-Chromium-based browser by exploiting the WebSocket connection.
Note: Chrome 94+ (and other Chromium-based browsers) users are unaffected by this vulnerability due to the non-HTTPS private access blocking feature.