CVE-2026-34083

6.1 MEDIUM
Published: April 02, 2026 Modified: April 06, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/SignalK/signalk-server/releases/tag/v2.24.0
Source: security-advisories@github.com
Product Release Notes
https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57c
Source: security-advisories@github.com
Exploit Vendor Advisory
https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57c
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.1 / 10.0
EPSS (Exploit Probability)
0.0%
3th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

signalk