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TI-2026-85497 Aliases CVE-2026-75599

Stored XSS via javascript: URI in HomeBox custom entity fields

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

HomeBox versions before 0.27.0 do not restrict the URL scheme in markdown-style links within entity custom-field values, so maybeUrl() accepts javascript: URIs (CWE-79). An authenticated user can store such a link that renders as a clickable anchor on an item page. When another authenticated user clicks it, attacker-controlled JavaScript runs in the victim's HomeBox origin, which can enable session theft, account takeover, or data exfiltration.

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, the maybeUrl() utility accepts markdown-style links in entity custom-field values without restricting the URL scheme, so an authenticated user can store a javascript: URI that is rendered as a clickable anchor on an item page. When another authenticated user clicks the link, attacker-controlled JavaScript executes in the victim's HomeBox origin, enabling session theft, account takeover, or data exfiltration. This issue is fixed in version 0.27.0.

Why it matters now

EPSS 0.00165 5th 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-2026-75599
  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-2026-85499 Email case sensitivity in HomeBox allows duplicate accounts CVSS 3.1MEDIUM 6.5
See all 13 →

Sources

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