Origin Validation Error Affecting webkitgtk package, versions [,2.46.0)
Threat Intelligence
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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Test your applications- Snyk IDSNYK-UNMANAGED-WEBKITGTK-14101872
- published23 Nov 2025
- disclosed20 Nov 2025
- creditAleksejs Popovs
Introduced: 20 Nov 2025
NewCVE-2025-43480 (opens in a new tab)How to fix?
Upgrade webkitgtk to version 2.46.0 or higher.
Overview
Affected versions of this package are vulnerable to Origin Validation Error via the MediaResourceLoader::requestResource function in the WebCore loader component. An attacker can exfiltrate cross-origin data by loading cross-origin media resources without CORS that contain nested resources (e.g., HLS playlists), allowing performance timing entries for those nested resources to be exposed through the Performance API, which can be used to infer information about cross-origin resources.