---
id: CVE-2026-85286
title: >-
  HomeBox: Timing Side-Channel in Login Endpoint Allows User Enumeration via
  Bcrypt Hashing Delay
summary: >-
  HomeBox is a home inventory and organization system. Prior to 0.27.0, the POST
  /api/v1/users/login endpoint performs password-hash verification only when the
  submitted username matches an existing account, while unknown usernames return
  …
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-204
  - CWE-208
vendor: sysadminsmedia
product: homebox
affected:
  - homebox < 0.27.0
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T16:01:52.991Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-85286'
references:
  - url: >-
      https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-4p8r-vm9v-c9pm
    label: >-
      https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-4p8r-vm9v-c9pm
  - url: >-
      https://github.com/sysadminsmedia/homebox/commit/66809ce3583cbd0b43e8f5ce30cc269a1cfe4201
    label: >-
      https://github.com/sysadminsmedia/homebox/commit/66809ce3583cbd0b43e8f5ce30cc269a1cfe4201
  - 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: '2026-11-05T22:38:31.321Z'
---

## Overview

HomeBox is a home inventory and organization system. Prior to 0.27.0, the POST /api/v1/users/login endpoint performs password-hash verification only when the submitted username matches an existing account, while unknown usernames return immediately. Although both paths return the same 401 unauthorized response, the processing-time discrepancy allows an unauthenticated remote attacker to distinguish registered email addresses; rate limiting only reduces the number of attempts per window. 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.