What is CVE-2026-33950?

CVE-2026-33950 is a critical-severity vulnerability in Signalk Signalk-server, classified under Improper Authorization. CVSS score: 9.4/10. Published 2026-04-02.

How severe is CVE-2026-33950?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Auth bypass in Signalk Signalk-server

CVE-2026-33950

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.4, there is a privilege escalation vulnerability by Admin Role Injection via /enableSecurity. An unauthenticated attacker can gain f…

EPSS: 0.000 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.

Affected products

Signalk Signalk-server — versions < 2.24.0-beta.4

Weakness classification (CWE)

References

https://github.com/SignalK/signalk-server/security/advisories/GHSA-x8hc-fqv3-7gwf (x_refsource_CONFIRM)
https://github.com/SignalK/signalk-server/releases/tag/v2.24.0-beta.4 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33950?: CVE-2026-33950 is a critical-severity vulnerability in Signalk Signalk-server, classified under Improper Authorization. CVSS score: 9.4/10. Published 2026-04-02.
How severe is CVE-2026-33950?: Critical severity. CVSS v3 base score is 9.4 out of 10.