# Signalk vulnerabilities

Source: https://junglewise.ai/threats/vendors/signalk  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/signalk.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 10 vulnerabilities in Signalk: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-41893, was published on 9 May 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 10 (2 critical, 0 exploited in the wild)

## About Signalk

Organization developing Signal K, an open standard for vessel data exchange.

## Latest Signalk vulnerabilities

- [CVE-2026-41893: SignalK Signal K Server brute-force protection bypass in WebSocket login](https://junglewise.ai/threats/cve-2026-41893-signalk-signal-k-server-brute-force-protection-bypass-in) (high, CVSS 7.5, published 9 May 2026)
- [CVE-2026-39320: Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths](https://junglewise.ai/threats/cve-2026-39320-signal-k-server-has-an-unauthenticated-regular-expression-denial) (high, CVSS 7.5, published 21 Apr 2026)
- [CVE-2026-35038: SignalK signalk-server arbitrary prototype read in applicationData](https://junglewise.ai/threats/cve-2026-35038-signalk-signalk-server-arbitrary-prototype-read-in) (medium, CVSS 6.5, published 2 Apr 2026)
- [CVE-2026-34083: Signal K Server OAuth code theft via unvalidated Host header in OIDC](https://junglewise.ai/threats/cve-2026-34083-signal-k-server-oauth-code-theft-via-unvalidated-host-header-in) (medium, CVSS 6.1, published 2 Apr 2026)
- [CVE-2026-33951: SignalK Signal K Server authentication bypass in sourcePriorities endpoint](https://junglewise.ai/threats/cve-2026-33951-signalk-signal-k-server-authentication-bypass-in-sourcepriorities) (high, CVSS 7.5, published 2 Apr 2026)
- [CVE-2026-33950: SignalK Signal K Server privilege escalation in /enableSecurity](https://junglewise.ai/threats/cve-2026-33950-signalk-signal-k-server-privilege-escalation-in-enablesecurity) (critical, CVSS 9.4, published 2 Apr 2026)
- [CVE-2026-25228: SignalK Server path traversal in applicationData API](https://junglewise.ai/threats/cve-2026-25228-signalk-server-path-traversal-in-applicationdata-api) (low, CVSS 3.1, published 2 Feb 2026)
- [CVE-2025-68273: Signal K Server Vulnerable to Unauthenticated Information Disclosure via Exposed Endpoints](https://junglewise.ai/threats/cve-2025-68273-signal-k-server-vulnerable-to-unauthenticated-information) (medium, CVSS 5.3, published 1 Jan 2026)
- [CVE-2025-68272: Signal K Server Vulnerable to Denial of Service via Unrestricted Access Request Flooding](https://junglewise.ai/threats/cve-2025-68272-signal-k-server-vulnerable-to-denial-of-service-via-unrestricted) (high, CVSS 7.5, published 1 Jan 2026)
- [CVE-2025-66398: Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)](https://junglewise.ai/threats/cve-2025-66398-signal-k-server-has-unauthenticated-state-pollution-leading-to) (critical, CVSS 9.6, published 1 Jan 2026)

## Most severe Signalk vulnerabilities

- [CVE-2025-66398: Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)](https://junglewise.ai/threats/cve-2025-66398-signal-k-server-has-unauthenticated-state-pollution-leading-to) (critical, CVSS 9.6, published 1 Jan 2026)
- [CVE-2026-33950: SignalK Signal K Server privilege escalation in /enableSecurity](https://junglewise.ai/threats/cve-2026-33950-signalk-signal-k-server-privilege-escalation-in-enablesecurity) (critical, CVSS 9.4, published 2 Apr 2026)
- [CVE-2025-68272: Signal K Server Vulnerable to Denial of Service via Unrestricted Access Request Flooding](https://junglewise.ai/threats/cve-2025-68272-signal-k-server-vulnerable-to-denial-of-service-via-unrestricted) (high, CVSS 7.5, published 1 Jan 2026)
- [CVE-2026-33951: SignalK Signal K Server authentication bypass in sourcePriorities endpoint](https://junglewise.ai/threats/cve-2026-33951-signalk-signal-k-server-authentication-bypass-in-sourcepriorities) (high, CVSS 7.5, published 2 Apr 2026)
- [CVE-2026-41893: SignalK Signal K Server brute-force protection bypass in WebSocket login](https://junglewise.ai/threats/cve-2026-41893-signalk-signal-k-server-brute-force-protection-bypass-in) (high, CVSS 7.5, published 9 May 2026)
- [CVE-2026-39320: Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths](https://junglewise.ai/threats/cve-2026-39320-signal-k-server-has-an-unauthenticated-regular-expression-denial) (high, CVSS 7.5, published 21 Apr 2026)
- [CVE-2026-35038: SignalK signalk-server arbitrary prototype read in applicationData](https://junglewise.ai/threats/cve-2026-35038-signalk-signalk-server-arbitrary-prototype-read-in) (medium, CVSS 6.5, published 2 Apr 2026)
- [CVE-2026-34083: Signal K Server OAuth code theft via unvalidated Host header in OIDC](https://junglewise.ai/threats/cve-2026-34083-signal-k-server-oauth-code-theft-via-unvalidated-host-header-in) (medium, CVSS 6.1, published 2 Apr 2026)
- [CVE-2025-68273: Signal K Server Vulnerable to Unauthenticated Information Disclosure via Exposed Endpoints](https://junglewise.ai/threats/cve-2025-68273-signal-k-server-vulnerable-to-unauthenticated-information) (medium, CVSS 5.3, published 1 Jan 2026)
- [CVE-2026-25228: SignalK Server path traversal in applicationData API](https://junglewise.ai/threats/cve-2026-25228-signalk-server-path-traversal-in-applicationdata-api) (low, CVSS 3.1, published 2 Feb 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Signalk technologies

- [Signalk Signal K Server](https://junglewise.ai/threats/technologies/signalk-signal-k-server): 4 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Signalk vulnerabilities", https://junglewise.ai/threats/vendors/signalk, 9 November 2026.