Vulnerability · Published Apr 2, 2026 · Assigned by GitHub_M

CVE-2026-33950signalk-server: Privilege Escalation by Admin Role Injection via /enableSecurity

Critical 9.4

In plain English

A critical-severity authentication bypass in signalk-server from SignalK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.4Critical

Exploit odds (30 days)0.4%top 62.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 full Administrator access to the SignalK server at any time, allowing them to modify sensitive vessel routing data, alter server configurations, and access restricted endpoints. This issue has been patched in version 2.24.0-beta.4.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	signalk-server	2.24.0-beta.4	GHSA-x8hc-fqv3-7gwf

Affected products (as reported)

Vendor	Product	Versions
SignalK	signalk-server	< 2.24.0-beta.4

Weakness: CWE-285, CWE-288, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

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