CVE-2026-64824: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in home-assistant Home Assistant Core
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.
AI Analysis
Technical Summary
CVE-2026-64824 is a path traversal vulnerability in Home Assistant Core's backup-restore function affecting versions before 2026.6.0. Attackers can supply a malicious tar archive containing a SYMTYPE entry with a benign member name and an absolute linkname pointing outside the extraction directory. The unvalidated symlink allows subsequent file extraction to overwrite arbitrary files on the filesystem. Since the official Docker image runs the process as root, this can lead to remote code execution by overwriting auto-imported Python files such as site-packages/sitecustomize.py or custom component directories.
Potential Impact
Successful exploitation allows attackers to write files to arbitrary absolute paths on the filesystem with root privileges in the official Docker environment. This can lead to remote code execution by overwriting critical Python import paths or custom components, severely compromising the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid restoring backups from untrusted sources and consider running Home Assistant with least privilege to limit impact.
CVE-2026-64824: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in home-assistant Home Assistant Core
Description
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.
CVSS v4.0
Score 9.3critical
Affected software
pkg:github/Home Assistant CoreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64824 is a path traversal vulnerability in Home Assistant Core's backup-restore function affecting versions before 2026.6.0. Attackers can supply a malicious tar archive containing a SYMTYPE entry with a benign member name and an absolute linkname pointing outside the extraction directory. The unvalidated symlink allows subsequent file extraction to overwrite arbitrary files on the filesystem. Since the official Docker image runs the process as root, this can lead to remote code execution by overwriting auto-imported Python files such as site-packages/sitecustomize.py or custom component directories.
Potential Impact
Successful exploitation allows attackers to write files to arbitrary absolute paths on the filesystem with root privileges in the official Docker environment. This can lead to remote code execution by overwriting critical Python import paths or custom components, severely compromising the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid restoring backups from untrusted sources and consider running Home Assistant with least privilege to limit impact.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-07-20T18:27:48.160Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5f96f32a4a8d59895fb325
Added to database: 07/21/2026, 15:57:39 UTC
Last enriched: 07/30/2026, 00:50:32 UTC
Last updated: 09/03/2026, 10:52:10 UTC
Views: 69
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