Server-side Request Forgery (SSRF)

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the makeRemoteRequest function. An attacker can access internal network resources, cloud metadata services, and arbitrary extern...

PT-2026-50825

Summary signalk-server versions up to and including 2.27.0 contain a Server-Side Request Forgery SSRF vulnerability in three administrative endpoints used for remote Signal K server connection management. The makeRemoteRequest function accepts attacker-controlled host, port, useTLS, and...

CVE-2026-55591

creationtimestamp| type| source ---|---|--- 2026-06-16 18:01:53+00:00| published-proof-of-concept| https://github.com/SignalK/signalk-server/security/advisories/GHSA-q59x-jc9f-gfqf...

CVE-2026-41893

Signal K Server’s WebSocket login path (via ws signalk/v1/stream) processes login attempts without rate limiting, enabling credential brute‑forcing at ~20 attempts/sec per WebSocket connection and bypassing HTTP rate limiting. Affected cve: CVE-2026-41893 concerns pre‑2.25.0 behavior. Technical d...

GHSA-7GCJ-PHFF-2884 Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths

Summary The SignalK server is vulnerable to an unauthenticated Regular Expression Denial of Service ReDoS attack within its WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the context parameter of a stream subscription, an attacker can force the server's...

Regular Expression Denial of Service (ReDoS)

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the contextMatcher and pathMatcher functions. An attacker can cause the server to become unresponsive and exhaust CPU...

GHSA-CXJ8-GGF2-P57C Signal K Server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow

Summary SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirecturi. Because the redirectUri configuration is silently unset by default, an attacker spoof the Host header to steal OAuth...

Origin Validation Error

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Origin Validation Error via the construction of the redirectUri and fullPostLogoutUri using an unvalidated Host header in the OIDC authentication and logout processe...

Signal K Server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow

Summary SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirecturi. Because the redirectUri configuration is silently unset by default, an attacker spoof the Host header to steal OAuth...

EUVD-2026-18374

Signal K Server: Unauthenticated Source Priorities Manipulation...

Signal K Server: Unauthenticated Source Priorities Manipulation

Summary 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...

Missing Authentication for Critical Function

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the PUT /signalk/v1/api/sourcePriorities endpoint, which lacks authentication and directly assigns user input to...

EUVD-2026-18372

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

Authentication Bypass Using an Alternate Path or Channel

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via the /skServer/enableSecurity endpoint. An attacker can gain unauthorized administrative privileges by...

CVE-2026-33951

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...

Out-of-bounds Read

Overview signalk-server is an An implementation of a Signal K server for boats. Affected versions of this package are vulnerable to Out-of-bounds Read in the from field of JSON-patch operations. An attacker can access internal Node.js functions and prototype state by crafting a payload that targe...

CVE-2026-33951

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...

CVE-2026-35038 signalk-server: Arbitrary Prototype Read via `from` Field Bypass

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, there is an arbitrary prototype read vulnerability via from field bypass. This vulnerability allows a low-privileged authenticated user to bypass prototype boundary filtering to extract internal...

CVE-2026-35038

CVE-2026-35038 affects Signal K Server (prior to v2.24.0). Affected component: prototype boundary filtering in the global prototype object accessed via the from field, allowing a low-privileged authenticated user to bypass filtering and read internal functions/properties, violating data isolation...

CVE-2026-35038 signalk-server: Arbitrary Prototype Read via `from` Field Bypass

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, there is an arbitrary prototype read vulnerability via from field bypass. This vulnerability allows a low-privileged authenticated user to bypass prototype boundary filtering to extract internal...