PT-2026-29798 · Signal · Signal K Server

Published 2026-04-02 · Updated 2026-04-02 · CVE-2026-34083

NVD

CVSS v3.1

6.1

Medium

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Fix

Origin Validation Error

Open Redirect

Weakness Enumeration

CWE-346

CWE-601

Related Identifiers

CVE-2026-34083

Affected Products

Signal K Server

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-34083 · Security Note
• https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57c · Note
• https://github.com/SignalK/signalk-server/releases/tag/v2.24.0 · Note