by Kastro
Paper/Archive/CVE-2026-64824

CVE-2026-64824

home-assistant Home Assistant Core — Home Assistant Core < 2026.7.0 Symlink Path Traversal RCE via backup-restore

EPSS 0.7%public exploitCVSS 9.3
critical.is priorityof 100
49
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 53.7.537 × 2010.7Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Home Assistant Core< 2026.7.02026.7.0CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
VulnCheck (CNA)8.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgithub.com/home-assistant/core/releases/tag/2026.7.0refgithub.com/home-assistant/core/pull/172252patchgithub.com/home-assistant/core/commit/1e457600f1093c15e1325742d03e2b76498c79c1writeupvulncheck.com/advisories/home-assistant-core-symlink-path-traversal-rce-via-backup-restoreexploitgithub.com/MervinPraison/PraisonAI/security/advisories/GHSA-78r8-wwqv-r299