CVE-2026-33951— signalk-server: Unauthenticated Source Priorities Manipulation
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I. Basic Information for CVE-2026-33951
Vulnerability Information
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Vulnerability Title
signalk-server: Unauthenticated Source Priorities Manipulation
Source: NVD (National Vulnerability Database)
Vulnerability Description
Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.1, the SignalK Server exposes an unauthenticated HTTP endpoint that allows remote attackers to modify navigation data source priorities. This endpoint, accessible via PUT /signalk/v1/api/sourcePriorities, does not enforce authentication or authorization checks and directly assigns user-controlled input to the server configuration. As a result, attackers can influence which GPS, AIS, or other sensor data sources are trusted by the system. The changes are immediately applied and persisted to disk, allowing the manipulation to survive server restarts. This issue has been patched in version 2.24.0-beta.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Signal K Server 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Signal K Server是Signal K开源的一个船用中央服务器。 Signal K Server 2.24.0-beta.1之前版本存在访问控制错误漏洞，该漏洞源于未经验证的端点允许修改数据源优先级，可能导致导航数据被操纵。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SignalK | signalk-server | < 2.24.0-beta.1 | - |
II. Public POCs for CVE-2026-33951
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|---|
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Same Patch Batch · SignalK · 2026-04-02 · 4 CVEs total
| CVE-2026-33950 | 9.4 CRITICAL | signalk-server: Privilege Escalation by Admin Role Injection via /enableSecurity |
| CVE-2026-34083 | 6.1 MEDIUM | signalk-server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow |
| CVE-2026-35038 | signalk-server: Arbitrary Prototype Read via `from` Field Bypass |
IV. Related Vulnerabilities
Same product: signalk-server
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2026-39320
Signal K Server has an Unauthenticated Regular Expression De - CVE-2026-35038
signalk-server: Arbitrary Prototype Read via `from` Field By - CVE-2026-34083
signalk-server: OAuth Authorization Code Theft via Unvalidat - CVE-2026-33950
signalk-server: Privilege Escalation by Admin Role Injection
Same vendor: SignalK
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2026-39320
Signal K Server has an Unauthenticated Regular Expression De - CVE-2026-35038
signalk-server: Arbitrary Prototype Read via `from` Field By - CVE-2026-34083
signalk-server: OAuth Authorization Code Theft via Unvalidat - CVE-2026-33950
signalk-server: Privilege Escalation by Admin Role Injection
Same weakness: CWE-284
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V. Comments for CVE-2026-33951
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