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 craft…
Critical CVSS 9.3
Summary
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 arbitrar…
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Sources
- NVD DATABASE
Original Links
- https://github.com/home-assistant/core/commit/567fe858289876b68b8162a77bd46e1e1af79752
- https://github.com/home-assistant/core/pull/172368
- https://github.com/home-assistant/core/releases/tag/2026.6.0
- https://www.vulncheck.com/advisories/home-assistant-core-path-traversal-file-write-via-backup-upload
Timeline
- nvd_ingest NVD