---
id: CVE-2026-116680
title: Homebox generic notifier SSRF via HTTP redirect after URL validation
summary: >-
  HomeBox is a home inventory and organization system. Prior to version 0.27.0,
  Homebox validates generic notifier URLs with ValidateNotifierURL before
  creation, update, testing, and scheduled delivery, but shoutrrr sends the
  request throu…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: sysadminsmedia
product: homebox
affected:
  - homebox < 0.27.0
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T17:43:52.502Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116680'
references:
  - url: >-
      https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-4gp5-59x3-vhhg
    label: >-
      https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-4gp5-59x3-vhhg
  - url: >-
      https://github.com/sysadminsmedia/homebox/commit/52eb6f3511bf239bcf34a87a4d13cedd2f704122
    label: >-
      https://github.com/sysadminsmedia/homebox/commit/52eb6f3511bf239bcf34a87a4d13cedd2f704122
  - url: 'https://github.com/sysadminsmedia/homebox/releases/tag/v0.27.0'
    label: 'https://github.com/sysadminsmedia/homebox/releases/tag/v0.27.0'
tags:
  - cve.org
ingestedAt: '2026-10-27T17:54:31.780Z'
---

## Overview

HomeBox is a home inventory and organization system. Prior to version 0.27.0, Homebox validates generic notifier URLs with ValidateNotifierURL before creation, update, testing, and scheduled delivery, but shoutrrr sends the request through http.DefaultClient.Do without a CheckRedirect policy that revalidates each Location target. An authenticated collection member can configure a permitted notifier host that redirects to loopback, link-local, cloud metadata, or another blocked destination, causing the follow-up request to bypass the product's SSRF policy. The flaw is reachable through POST /api/v1/notifiers/test for immediate requests and through stored notifiers during scheduled maintenance delivery. This issue is fixed in version 0.27.0.

## Affected

- `homebox < 0.27.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.