CVE-2025-56647

@farmfe/core is Missing Origin Validation in WebSocket

6.5 MediumFix available

npm @farmfe/core before 1.7.6 is Missing Origin Validation in WebSocket. The development (hot module reloading) server does not validate origin when connecting to a WebSocket client. This allows attackers to surveil developers running Farm who visit their webpage and steal source code that is leaked by the WebSocket server.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.22%Up 0.2 points since Feb 13, 2026

What each source reports

CVE List Score used 6.5

Record: CVE-2025-56647
CVSS 3.1: 6.5 MediumCVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:R
Weakness: CWE-1385
Updated: 2026-11-02

EUVDEUVD-2025-207250 6.5

Record: EUVD-2025-207250
CVSS 3.1: 6.5 MediumCVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:R
Updated: 2026-11-02

GitHub AdvisoriesGHSA-p773-8mf4-rjm5 6.5

@farmfe/core is Missing Origin Validation in WebSocket

Record: GHSA-p773-8mf4-rjm5
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness: CWE-1385
Updated: 2026-11-02

NVD 6.5

Record: CVE-2025-56647
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness: CWE-1385
Updated: 2026-11-02

OSV 6.5

Record: CVE-2025-56647
CVSS 3.1: 6.5 MediumCVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:R
Updated: 2026-11-02

OSVGHSA-p773-8mf4-rjm5 6.5

@farmfe/core is Missing Origin Validation in WebSocket

Record: GHSA-p773-8mf4-rjm5
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness: CWE-1385
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`@farmfe/core` npm	before 1.7.6	1.7.6

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-56647 is a medium vulnerability (CVSS 6.5) in @farmfe/core, published February 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. Fixed in @farmfe/core 1.7.6.