CVE-2025-56648

MEDIUM EPSS 12.5%
Published Sep 17, 20259mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Sep 17, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
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

Threat Intelligence

EPSS Exploit Probability
12.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-346

Affected Products 2

VendorProductVersionRange
parceljsparcel* ≤1.10.3
parceljsparcel2.0.0any

References 4

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.