Missing Origin Validation in WebSockets Affecting @farmfe/core package, versions <1.7.6
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-FARMFECORE-15282805
- published15 Feb 2026
- disclosed12 Feb 2026
- creditRadman Siddiki
Introduced: 12 Feb 2026
NewCVE-2025-56647 (opens in a new tab)How to fix?
Upgrade @farmfe/core to version 1.7.6 or higher.
Overview
@farmfe/core is a Farm is a extremely fast web build tool written in Rust. Farm can start a project in milliseconds and perform HMR within 10ms, making it much faster than similar tools like webpack and vite.
Affected versions of this package are vulnerable to Missing Origin Validation in WebSockets when connecting to a WebSocket client. An attacker can access sensitive source code and monitor developer activity by initiating unauthorized WebSocket connections when a developer visits a malicious webpage.