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Vulnerability record · CVE-2026-64824 · published 21 July 2026

CVE-2026-64824: Path traversal vulnerability

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.

9.3 CVSS 4.0 Critical EPSS 0.80% · top 45.3% CWE-22 · Path traversal Deferred
9.3CVSS 4.0 base score
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
21 Jul 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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

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Source: NIST National Vulnerability Database (record CVE-2026-64824), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.