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CVE-2026-33950

34
FAUCET Score

CVE-2026-33950 is a critical privilege escalation vulnerability affecting Signal K Server versions prior to 2.24.0-beta.4, a server application running on boat central hubs. Rated 9.4 CVSS, this flaw allows an unauthenticated attacker to gain full Administrator access by injecting an admin role via the /enableSecurity endpoint. This enables modification of sensitive vessel routing data, alteration of server configurations, and access to restricted endpoints. There is currently no evidence of active exploitation, nor are public exploit tools available, though it has received minor community discussion. Organizations using affected versions should update to 2.24.0-beta.4 or later immediately.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.24.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*
2.24.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.24.0:beta1:*:*:*:*:*:*
2.24.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.24.0:beta2:*:*:*:*:*:*
2.24.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.24.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.4CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 11th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: signalk-serverFixed in: 2.24.0-beta.4
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-x8hc-fqv3-7gwfcritical

Signal K Server: Privilege Escalation by Admin Role Injection via /enableSecurity

Apr 3, 2026

References

github.com / SignalK/signalk-server/releases/tag/v2.24.0-beta.4
ProductRelease Notes
github.com / SignalK/signalk-server/security/advisories/GHSA-x8hc-fqv3-7gwf
ExploitVendor Advisory