CVE-2026-71283

Fledge IoT Gateway Backup Restore Tar Path Traversal

Published Aug 5, 2026 CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
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. Requires the admin role (@has_permission("admin")).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description 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")). 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. Requires the admin role (@has_permission("admin")).
Title Fledge IoT Gateway - Backup Restore Tar Path Traversal Fledge IoT Gateway Backup Restore Tar Path Traversal
Type Values Removed Values Added
Title Fledge IoT Gateway Backup Restore Tar Path Traversal Fledge IoT Gateway - Backup Restore Tar Path Traversal
Type Values Removed Values Added
First Time appeared Fledge-iot
Fledge-iot fledge
Vendors & Products Fledge-iot
Fledge-iot fledge
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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")).
Title Fledge IoT Gateway Backup Restore Tar Path Traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TuranSec
Published
Updated
Aug 10, 2026, 11:47 AM
Reserved
Aug 5, 2026, 12:23 PM
Status
Deferred
Published
Aug 5, 2026, 1:24 PM
Modified
Oct 23, 2026, 9:10 PM