GHSA-5hxg-r395-fqxx
Home Assistant Core vulnerable to Path Traversal via backup upload during onboarding
Quick fix
GHSA-5hxg-r395-fqxx — homeassistant: upgrade to the fixed version with the command below.
pip install --upgrade 'homeassistant>=2026.6.0'Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
0 Fixed in: 2026.6.0 pip install --upgrade 'homeassistant>=2026.6.0' References
- https://nvd.nist.gov/vuln/detail/CVE-2026-64825 [ADVISORY]
- https://github.com/home-assistant/core/pull/172368 [WEB]
- https://github.com/home-assistant/core/commit/567fe858289876b68b8162a77bd46e1e1af79752 [WEB]
- https://github.com/home-assistant/core [PACKAGE]
- https://github.com/home-assistant/core/releases/tag/2026.6.0 [WEB]
- https://www.vulncheck.com/advisories/home-assistant-core-path-traversal-file-write-via-backup-upload [WEB]