Medium severity · published Apr 2, 2026
CVE-2026-35038
signalk-server: Arbitrary Prototype Read via `from` Field Bypass
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
signalk-server · SignalK
< 2.24.0 · source: vendor
SK
Signal K Server · Signalk
before 2.24.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35038
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-35038
Product
https://github.com/SignalK/signalk-server/releases/tag/v2.24.0
Exploit
https://github.com/SignalK/signalk-server/security/advisories/GHSA-qh3j-mrg8-f234
More from signalk-server
9.8
CVE-2026-118690
Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs
9.4
CVE-2026-33950
signalk-server: Privilege Escalation by Admin Role Injection via /enableSecurity
9.1
CVE-2025-68620
Signal K Server vulnerable to JWT Token Theft via WebSocket Enumeration and Unauthenticated Polling
8.8
CVE-2026-23515
RCE - Command Injection in Signal K set-system-time plugin
8.8
CVE-2025-69203
Signal K Server Vulnerable to Access Request Spoofing