MEDIUM 4.9 NVD
CVE-2026-71283
Fledge's backup-restore upload handler, upload_backup() (python/fledge/services/core/api/backup_restore.py), calls tarfile.extractall(temp_path) on an admin-upl
Fledge's backup-restore upload handler, upload_backup() (python/fledge/services/core/api/backup_restore.py), calls tarfile.extractall(temp_path) on an admin-uploaded tar archive with no filter argument and no per-member path validation. A crafted tar archive containing member names with `../` path components extracts files outside the intended temporary directory, allowing arbitrary file writes anywhere on the filesystem reachable by the Fledge process. Requires the admin role (@has_permission("admin")).
References
- https://github.com/fledge-iot/fledge
- https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_rest
This medium severity vulnerability with a CVSS score of 4.9 was published on 2026-08-05 via NVD.
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