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TI-2026-85499 Aliases CVE-2026-85287

Email case sensitivity in HomeBox allows duplicate accounts

Priority LOW 29CWE-1024Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

HomeBox before 0.27.0 treats email addresses as case-sensitive during registration and uniqueness checks, but its login lookup is case-insensitive. This mismatch is an improper handling of case sensitivity (CWE-178). An unauthenticated attacker who knows a victim's email can register a differently cased variant, creating duplicate accounts that bypass the one-account-per-email policy and cause login to fail for the victim.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

HomeBox is a home inventory and organization system. Prior to 0.27.0, POST /api/v1/users/register and the users.email uniqueness constraint treat email addresses as case-sensitive while HomeBox uses a case-insensitive login lookup. An unauthenticated attacker who knows a victim's email can register a differently cased variant, creating duplicate rows that cause login to return 401 for both variants and deny the victim access, while also bypassing the one-account-per-email policy. This issue is fixed in version 0.27.0.

Why it matters now

EPSS 0.00291 21st percentileScored 2026-11-07
Fix Fixed homebox (sysadminsmedia): 0.27.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
sysadminsmediahomeboxbefore 0.27.00.27.0Patch availableCNA
  • homebox Vendorsysadminsmedia Affected before 0.27.0 Fixed in 0.27.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:sysadminsmedia:homebox:*:*:*:*:*:*:*:*——sysadminsmedia
  • cpe:2.3:a:sysadminsmedia:homebox:*:*:*:*:*:*:*:* Versions — — ·sysadminsmedia

Remediation

Upgrade sysadminsmedia HomeBox to version 0.27.0, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA homebox (sysadminsmedia) Fixed in 0.27.0

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-85287
  2. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 3

  • TI-2026-36232 HomeBox: Cross-Tenant IDOR in Notifier Update Leaks Shoutrrr Credentials and Allows Webhook Hijack CVSS 3.1HIGH 8.1
  • TI-2026-36231 Authorization bypass in sysadminsmedia homebox CVSS 3.1HIGH 8.1
  • TI-2026-29010 HomeBox has Unauthorized API Access via Retained defaultGroup ID After Group Access Revocation CVSS 3.1HIGH 8.1
  • TI-2026-36094 HomeBox: Cross-Group Inventory Wipe in Homebox via Global Owner Role and X-Tenant Header Switching CVSS 3.1HIGH 8.1
  • TI-2026-22323 HomeBox has an Auth Rate Limit Bypass via IP Spoofing CVSS 3.1HIGH 7.4
  • TI-2026-81496 Server-side request forgery in Homebox notifier via HTTP redirects CVSS 3.1MEDIUM 6.4
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences