Read the docs
TI-2026-46350 Aliases CVE-2026-64825GHSA-5hxg-r395-fqxx

Home Assistant Core < 2026.6.0 Path Traversal File Write via Backup Upload

Priority MEDIUM 46CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files to any directory on the host filesystem by uploading a crafted backup archive during the initial onboarding window. Attackers can manipulate the 'name' field inside the uploaded archive's backup.json to supply an absolute path, causing pathlib.Path.__truediv__ to discard the configured backup directory prefix and write attacker-controlled content to arbitrary locations, with full filesystem access when the process runs as root.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0058 47th percentileScored 2026-11-07
Fix Fixed Home Assistant Core (home-assistant): 2026.6.0homeassistant (PyPI): 2026.6.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
home-assistantHome Assistant Corebefore 2026.6.02026.6.0Patch availableCNA
—homeassistant (PyPI)before 2026.6.02026.6.0Patch availableGHSA-5hxg-r395-fqxx
  • Home Assistant Core Vendorhome-assistant Affected before 2026.6.0 Fixed in 2026.6.0 Patch available CNA
  • homeassistant (PyPI) Vendor— Affected before 2026.6.0 Fixed in 2026.6.0 Patch available GHSA-5hxg-r395-fqxx

Remediation

  • Fix · CNA Home Assistant Core (home-assistant) Fixed in 2026.6.0
  • Fix · GHSA-5hxg-r395-fqxx homeassistant (PyPI) Fixed in 2026.6.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-64825
  2. 2026-10-03 Alias added: GHSA-5hxg-r395-fqxx

References

Patch 2

Advisory 1

Other 2

  • TI-2023-12210 Improper authentication in home-assistant core CVSS 3.1CRITICAL 10.0
  • TI-2021-22555 Home Assistant Community Store 1.10.0 Path Traversal Account Takeover CVSS 4.0HIGH 8.7
  • TI-2026-61899 Home Assistant: XSS in Statistics Graph Card CVSS 4.0CRITICAL 9.3
  • TI-2026-46349 Home Assistant Core < 2026.7.0 Symlink Path Traversal RCE via backup-restore CVSS 4.0CRITICAL 9.3
  • TI-2026-40307 Cleartext transmission of sensitive information in home-assistant core CVSS 3.1HIGH 7.5
  • TI-2025-38490 Home Assistant vulnerable to Stored XSS in Energy dashboard from Energy Entity Name CVSS 4.0HIGH 8.5
See all 32 →

Sources

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