Out-of-bounds Read in Signalk Signal K Server
CVE-2026-35038
Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, there is an arbitrary prototype read vulnerability via `from` field bypass. This vulnerability allows a low-privileged authenticated user to bypass prototype boundary filtering to extract internal functions and properties from the global prototype object this violates data isolation and lets a user read more than they should. This issue has been patched in version 2.24.0.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.003 · change: -0.001
Affected products
- Signalk Signal K Server
- Signalk Signalk-Server — versions < 2.24.0
Weakness classification (CWE)
References
- github.com/SignalK/signalk-server/security/advisories/GHSA-qh3j-mrg8-f234 (Exploit, Mitigation, Vendor Advisory)
- github.com/SignalK/signalk-server/releases/tag/v2.24.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-35038?
- CVE-2026-35038 is a medium-severity vulnerability in Signalk Signal K Server, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-04-02.
- How severe is CVE-2026-35038?
- Medium severity. CVSS v3 base score is 6.5 out of 10.