How severe is CVE-2026-35038?

CVE-2026-35038 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-35038 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35038?

CVE-2026-35038 affects Signalk Signal K Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35038?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-35038 have an EU (EUVD) identifier?

Yes. CVE-2026-35038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18396.

When was CVE-2026-35038 published?

CVE-2026-35038 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-35038

CVE-2026-35038 is a medium-severity vulnerability in Signalk Signal K Server with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 2.1
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18396
Weakness: CWE-20
Affected product: Signalk Signal K Server
Published: 2026-04-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-35038?: CVE-2026-35038 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-35038 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35038?: CVE-2026-35038 affects Signalk Signal K Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35038?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35038 have an EU (EUVD) identifier?: Yes. CVE-2026-35038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18396.
When was CVE-2026-35038 published?: CVE-2026-35038 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*

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