CVE-2026-25228

MEDIUM

5.0

Description

Signal K Server is a server application that runs on a central hub in a boat. Prior to 2.20.3, a path traversal vulnerability in SignalK Server's applicationData API allows authenticated users on Windows systems to read, write, and list arbitrary files and directories on the filesystem. The validateAppId() function blocks forward slashes (/) but not backslashes (\), which are treated as directory separators by path.join() on Windows. This enables attackers to escape the intended applicationData directory. This vulnerability is fixed in 2.20.3.

CVE Details

CVSS v3.1 Score5.0

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/2/2026

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:windowssignalk:signal_k_server

Weaknesses (CWE)

CWE-22

References

https://github.com/SignalK/signalk-server/commit/9bcf61c8fe2cb8a40998b913a02fb64dff9e86c7(security-advisories@github.com)

https://github.com/SignalK/signalk-server/security/advisories/GHSA-vrhw-v2hw-jffx(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.