Origin Validation Error Affecting wpe_webkit package, versions [,2.50.2)
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-WPEWEBKIT-14101862
- published23 Nov 2025
- disclosed20 Nov 2025
- creditTom Van Goethem
Introduced: 20 Nov 2025
CVE-2025-43392 (opens in a new tab)How to fix?
Upgrade wpe_webkit to version 2.50.2 or higher.
Overview
Affected versions of this package are vulnerable to Origin Validation Error via setPlaceholderBuffer() in PlaceholderRenderingContext when transferring ImageBitmap data from an OffscreenCanvas to a placeholder canvas. An attacker can exfiltrate image data by drawing an image to an ImageBitmap, transferring it to an OffscreenCanvas, and then calling toDataURL() on the output canvas. This should throw a SecurityError, but it does not because the origin-clean flag is not propagated.