CVE-2025-56648: Parceljs Parcel

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.

Affected products

• Parceljs Parcel: up to and including 1.10.3; version 2.0.0 only

Published 2025-09-17. Last modified 2026-06-17.