Vulnerability Description
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 to construct the OAuth2 redirect_uri. Because the redirectUri configuration is silently unset by default, an attacker can spoof the Host header to steal OAuth authorization codes and hijack user sessions in realistic deployments as The OIDC provider will then send the authorization code to whatever domain was injected. This issue has been patched in version 2.24.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Signalk | Signal K Server | < 2.24.0 |
Related Weaknesses (CWE)
References
- https://github.com/SignalK/signalk-server/releases/tag/v2.24.0ProductRelease Notes
- https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57ExploitVendor Advisory
- https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57ExploitVendor Advisory
FAQ
What is CVE-2026-34083?
CVE-2026-34083 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 th...
How severe is CVE-2026-34083?
CVE-2026-34083 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34083?
Check the references section above for vendor advisories and patch information. Affected products include: Signalk Signal K Server.