CyberRota Analysis
AI-GeneratedHome Assistant Core versions prior to 2026.6.0 are vulnerable to a critical path traversal flaw that enables unauthenticated attackers to upload malicious backup archives, allowing them to write arbitrary files to any directory on the host filesystem. This vulnerability poses a severe risk, particularly if the Home Assistant process is executed with root privileges, granting attackers extensive access to the system. Organizations using Home Assistant should prioritize patching this vulnerability to mitigate the risk of unauthorized file manipulation and potential system compromise.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Home Assistant Core before 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.