CVE-2026-25228

Name: CVE-2026-25228
Creator: NVD / NIST
Published: 2026-02-02T23:16:10.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-25228 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.38%

30.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Signalk	Signal K Server	< 2.20.3

References

https://github.com/SignalK/signalk-server/commit/9bcf61c8fe2cb8a40998b913a02fb64dff9e86c7Patch
https://github.com/SignalK/signalk-server/security/advisories/GHSA-vrhw-v2hw-jffxExploit, Mitigation, Vendor Advisory

Timeline

Published: Feb 2, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25228?

How severe is CVE-2026-25228?

CVE-2026-25228 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25228?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25228?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST