CVE-2025-56648

npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability

Medium · published September 17, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
13.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00236 · 13.8th percentile
Published
2025-09-17T00:00Z
EPSS history
Timeline
  • 17 SEP 00:00Z
    npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability
    cvelistv5