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CVE-2025-68620

31
FAUCET Score

CVE-2025-68620 is a critical vulnerability affecting Signal K Server versions prior to 2.19.0. It allows unauthenticated attackers to steal JSON Web Token (JWT) authentication tokens by chaining two flaws: unauthenticated WebSocket request enumeration and unauthenticated token polling. This enables complete authentication bypass with a CVSS score of 9.1 (CRITICAL). While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.19.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*
2.19.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.19.0:beta1:*:*:*:*:*:*
2.19.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.19.0:beta2:*:*:*:*:*:*
2.19.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.19.0:beta3:*:*:*:*:*:*
2.19.0CPE matchmatch criteria
cpe:2.3:a:signalk:signal_k_server:2.19.0:beta4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 17th percentile among its peer group of 36,833 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

No media coverage found for this CVE.

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: 2.19.0
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-fq56-hvg6-wvm5critical

Signal K Server vulnerable to JWT Token Theft via WebSocket Enumeration and Unauthenticated Polling

Jan 2, 2026

References

github.com / SignalK/signalk-server/releases/tag/v2.19.0
Release Notes
github.com / SignalK/signalk-server/security/advisories/GHSA-fq56-hvg6-wvm5
ExploitVendor Advisory