CVE-2026-64824: Path Traversal (CVSS 8.4)

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.

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CVSS v3.1 Score

8.4

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

https://github.com/home-assistant/core/commit/1e457600f1093c15e1325742d03e2b76498c79c1 https://github.com/home-assistant/core/pull/172252 https://github.com/home-assistant/core/releases/tag/2026.7.0 https://www.vulncheck.com/advisories/home-assistant-core-symlink-path-traversal-rce-via-backup-restore https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-78r8-wwqv-r299

Frequently Asked Questions

What is CVE-2026-64824? +

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. It has a CVSS v3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-64824? +

CVE-2026-64824 has a CVSS v3.1 score of 8.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2026-64824? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-64824