CVE-2025-56648

MEDIUM
2025-09-17 [email protected]
6.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 19:12 vuln.today
PoC Detected
Jan 26, 2026 - 17:16 vuln.today
Public exploit code
CVE Published
Sep 17, 2025 - 19:15 nvd
MEDIUM 6.5

Tags

Information Disclosure Node.js Parcel Redhat

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.

Analysis

npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified under CWE-346. 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 include: Parceljs Parcel.

Affected Products

Parceljs Parcel.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

53
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: +20

Vendor Status

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CVE-2025-56648 vulnerability details – vuln.today
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