CVE-2026-64824
HighCVSS 8.4Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
A path traversal vulnerability in the backup-restore function of Home Assistant Core before 2026.7.0 allows attackers to write files to arbitrary absolute filesystem paths by supplying a crafted tar archive with a SYMTYPE entry. Because the official Docker image runs the process as root, attackers can achieve remote code execution by overwriting auto-imported Python paths such as site-packages/sitecustomize.py.
Risk Assessment
The risk for the organization includes full compromise of the Home Assistant system, potentially leading to data theft, espionage, or further attacks on IoT infrastructure.
Recommendation
Immediately upgrade Home Assistant Core to version 2026.7.0 or later, and consider running the process with reduced privileges (not as root) in the Docker environment.
Other vulnerabilities in Home Assistant Core
See all- CVE-2026-64825Critical
Home Assistant Core before version 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.
- CVE-2026-64823Medium
Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's `async_get_media_image()` method. Attackers controlling a Shelly device's thumb field can serve arbitrary HTML content via a data URI with `text/html` content type without validation against an image-only allowlist. This enables theft of session tokens and authenticated calls to sensitive endpoints like locks, alarms, and covers.
Original NVD description (English source)
Home Assistant Core before 2026.7.0 contains a path traversal vulnerability in the backup-restore function that allows attackers to write files to arbitrary absolute filesystem paths by supplying a crafted tar archive with a SYMTYPE entry containing a benign member name paired with an absolute linkname pointing outside the extraction directory. Because the official Docker image runs the Home Assistant process as root and the subsequent regular-file entry is written through the unvalidated symlink, attackers can achieve remote code execution by overwriting auto-imported Python paths such as site-packages/sitecustomize.py or custom component directories.