CVE-2026-35038: Signal K Server is a server application that runs on a central hub in a boat

Q: How do I fix CVE-2026-35038?

signal k server: upgrade to 2.24.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-35038 being exploited?

CVE-2026-35038 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-35038 affect?

CVE-2026-35038 affects signal k server. Severity is medium (CVSS 6.5). 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

Q: How urgent is CVE-2026-35038?

Priority 34/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2026-35038 is a medium-severity flaw (CVSS 6.5) affecting signal k server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-20, CWE-125, CWE-200
Published	2026-04-02
Last modified	2026-07-21

Publisher (CNA): GitHub, Inc. · Vendor: signalk

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 17:16 UTCPublished CVE record published
2026-07-21 19:10 UTCUpdated Record last modified

signalk signal k server UPGRADE

Affected: < 2.24.0

Fixed in: 2.24.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy signal-k-server || rpm -q signal-k-server || signal-k-server --version

2. UPGRADE to 2.24.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade signal-k-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade signal-k-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35038?

signal k server: upgrade to 2.24.0. Exact commands for each OS are on this page.

Is CVE-2026-35038 being exploited?

CVE-2026-35038 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35038 affect?

CVE-2026-35038 affects signal k server. Severity is medium (CVSS 6.5). 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

How urgent is CVE-2026-35038?

Priority 34/100. Public exploit reference

Related CVEs

CVE-2026-39320 HIGH 7.5 UPGRADE Signal K Server is a server application that runs on a central hub in a boat
CVE-2026-33950 CRITICAL 9.4 UPGRADE Signal K Server is a server application that runs on a central hub in a boat
CVE-2026-33951 HIGH 7.5 UPGRADE Signal K Server is a server application that runs on a central hub in a boat
CVE-2026-34083 MEDIUM 6.1 UPGRADE Signal K Server is a server application that runs on a central hub in a boat
CVE-2026-41893 HIGH 7.5 UPGRADE Signal K Server is a server application that runs on a central hub in a boat

References

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