What is CVE-2026-34083?

CVE-2026-34083 is a medium-severity vulnerability in Signalk Signal_k_server, classified under Origin Validation Error. CVSS score: 6.1/10. Published 2026-04-02.

How severe is CVE-2026-34083?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Signalk Signal_k_server

CVE-2026-34083

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used…

EPSS: 0.001 (1.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Signalk Signal_k_server
Signalk Signalk-server — versions < 2.24.0

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-34083?: CVE-2026-34083 is a medium-severity vulnerability in Signalk Signal_k_server, classified under Origin Validation Error. CVSS score: 6.1/10. Published 2026-04-02.
How severe is CVE-2026-34083?: Medium severity. CVSS v3 base score is 6.1 out of 10.