CVE-2025-56648

State: Published
Severity: 6.5 Medium
Published: Sep 17, 2025
Updated: Jan 26, 2026
Reserved: Aug 17, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-346 Origin Validation Error

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8
https://github.com/parcel-bundler/parcel/discussions/10089
https://github.com/parcel-bundler/parcel/issues/10216
https://github.com/parcel-bundler/parcel/commit/4bc56e3242a85491c7edf589966e9b44c6330c49

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