CVE-2026-35038: CWE-20: Improper Input Validation in SignalK signalk-server
CVE-2026-35038 is a low-severity vulnerability in SignalK Server versions prior to 2. 24. 0. It involves improper input validation that allows a low-privileged authenticated user to bypass prototype boundary filtering via the 'from' field. This enables the user to read internal functions and properties from the global prototype object, violating data isolation. The vulnerability has been patched in version 2. 24. 0.
AI Analysis
Technical Summary
SignalK Server, a central hub application for boats, had an arbitrary prototype read vulnerability due to improper input validation (CWE-20). Specifically, before version 2.24.0, a low-privileged authenticated user could exploit the 'from' field to bypass prototype boundary filtering and access internal functions and properties from the global prototype object. This breaks data isolation principles by exposing more information than intended. The issue is addressed by an official patch in version 2.24.0.
Potential Impact
The vulnerability allows unauthorized reading of internal prototype properties by authenticated users with low privileges. This compromises data isolation but does not allow privilege escalation, code execution, or denial of service. The CVSS 4.0 base score is 2.1, indicating low severity and limited impact.
Mitigation Recommendations
Upgrade SignalK Server to version 2.24.0 or later, where this vulnerability is patched. No other mitigation is required as the issue is resolved by the official fix.
CVE-2026-35038: CWE-20: Improper Input Validation in SignalK signalk-server
Description
CVE-2026-35038 is a low-severity vulnerability in SignalK Server versions prior to 2. 24. 0. It involves improper input validation that allows a low-privileged authenticated user to bypass prototype boundary filtering via the 'from' field. This enables the user to read internal functions and properties from the global prototype object, violating data isolation. The vulnerability has been patched in version 2. 24. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SignalK Server, a central hub application for boats, had an arbitrary prototype read vulnerability due to improper input validation (CWE-20). Specifically, before version 2.24.0, a low-privileged authenticated user could exploit the 'from' field to bypass prototype boundary filtering and access internal functions and properties from the global prototype object. This breaks data isolation principles by exposing more information than intended. The issue is addressed by an official patch in version 2.24.0.
Potential Impact
The vulnerability allows unauthorized reading of internal prototype properties by authenticated users with low privileges. This compromises data isolation but does not allow privilege escalation, code execution, or denial of service. The CVSS 4.0 base score is 2.1, indicating low severity and limited impact.
Mitigation Recommendations
Upgrade SignalK Server to version 2.24.0 or later, where this vulnerability is patched. No other mitigation is required as the issue is resolved by the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-31T21:06:06.428Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69cec35ae6bfc5ba1dfb4ce8
Added to database: 4/2/2026, 7:28:26 PM
Last enriched: 4/9/2026, 10:55:40 PM
Last updated: 5/20/2026, 9:37:05 PM
Views: 42
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