Missing Authentication for Critical Function Affecting signalk-server package, versions <2.24.0-beta.3
Threat Intelligence
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Missing Authentication for Critical Function vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JS-SIGNALKSERVER-15914574
- published6 Apr 2026
- disclosed3 Apr 2026
- creditVashuVats
Introduced: 3 Apr 2026
NewCVE-2026-33951 (opens in a new tab)How to fix?
Upgrade signalk-server to version 2.24.0-beta.3 or higher.
Overview
signalk-server is an An implementation of a Signal K server for boats.
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the PUT /signalk/v1/api/sourcePriorities endpoint, which lacks authentication and directly assigns user input to configuration. An attacker can alter trusted navigation data sources and persist these changes across server restarts by sending crafted requests to the unauthenticated endpoint.