---
id: "CVE-2026-115752"
kind: "vulnerability"
aliases: ["CVE-2026-115752"]
title: "Signal K Server: App Store icon fetcher enables server-side request forgery"
severity: "medium"
cvss: 4.2
epss: 0.00305
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["marine", "npm", "runtime", "self-hosted", "signal-k"]
not_affected_if: ["default-config"]
published_at: "2026-10-23T13:17:09+00:00"
first_seen_at: "2026-10-23T21:57:33+00:00"
updated_at: "2026-10-25T12:38:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115752", "first_seen_at": "2026-10-23T21:57:33+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-115752", "first_seen_at": "2026-10-25T12:38:50+00:00"}]
---

# Signal K Server: App Store icon fetcher enables server-side request forgery

Signal K Server versions from 2.28.0-beta.2 before 2.34.0 fetch icon URLs from npm packages without restricting the destination, trusting absolute signalk.appIcon URLs. An attacker who publishes a package with Signal K keywords can make the server request loopback, vessel-network or cloud metadata endpoints and store image responses that are shown back in the admin UI.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version with `signalk-server --version` or the `version` field in the package.json of the Signal K Server install.
- Check whether the App Store feature is in use in the admin UI.

## Fix

- Upgrade Signal K Server to `2.34.0` or later.

## Timeline

- 2026-10-23T21:57:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115752
- 2026-10-25T12:38:50+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-115752

## From the sources

Signal K Server from 2.28.0-beta.2 before 2.34.0 contains a server-side request forgery vulnerability in the App Store icon fetcher that trusts absolute signalk.appIcon URLs. Attackers publishing npm packages with Signal K keywords can make servers request loopback, vessel network, or cloud metadata endpoints, storing image-typed responses served back via the admin UI.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_