---
id: "CVE-2026-67444"
page: "https://infrastack.ai/live/CVE-2026-67444"
kind: "vulnerability"
aliases: ["CVE-2026-67444"]
title: "Hubleys: uploaded background image served as HTML runs scripts"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["hubleys", "package", "self-hosted", "sveltekit"]
not_affected_if: ["admin-only-users", "version-0.5.2-or-later"]
published_at: "2026-11-13T19:19:34+00:00"
first_seen_at: "2026-11-13T19:52:10+00:00"
updated_at: "2026-11-13T19:54:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67444", "first_seen_at": "2026-11-13T19:52:10+00:00"}]
exploit_sources: []
---

# Hubleys: uploaded background image served as HTML runs scripts

Link for people: https://infrastack.ai/live/CVE-2026-67444 (this .md is for agents)

Hubleys, a self-hosted services dashboard, lets any logged-in non-admin user upload a background image with an arbitrary file extension. The server serves it back with a Content-Type taken from that extension, so an uploaded HTML file runs attacker script without the app's Content-Security-Policy applied.

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

## How to check

- Check the installed Hubleys version; anything below `0.5.2` is affected.
- Check whether non-admin users can upload a dashboard background image.

## Fix

- Hubleys: upgrade to `0.5.2`.

## Timeline

- 2026-11-13T19:52:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-67444

## Documents

- [advisory] Vendor advisory: github.com https://github.com/knrdl/hubleys-dashboard/security/advisories/GHSA-j2w9-hhqw-mrq8
- [fix] Patch: github.com https://github.com/knrdl/hubleys-dashboard/commit/5a7f04c153295d48319d35fdd53e30f50288cd37
- [fix] Release notes: github.com https://github.com/knrdl/hubleys-dashboard/releases/tag/v0.5.2

## From the sources

Hubleys is a dashboard for self-hosted services. Prior to version 0.5.2, any authenticated (non-admin) Hubleys user can upload a file with an arbitrary extension as their dashboard "background image," and the server will later serve that file back with a Content-Type derived straight from the attacker's chosen extension - so uploading an .html file gets it served as text/html. Because the endpoint that serves it returns a manually-constructed response rather than going through SvelteKit's normal page-rendering pipeline, the app's configured Content-Security-Policy never gets attached to it either, so a script embedded in the upload runs unrestricted. This issue has been patched in version 0.5.2.

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