Fledge IoT Gateway Backup Restore Tar Path Traversal

Published 3 mo ago 2026-08-05 · modified 14 d ago 2026-10-23 · JSON

CVSS

4.9

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.4%

percentile 38%

Public exploits

none known

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")).

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 3 mo ago 2026-08-05

Exploit prediction (EPSS)

0.43% probability of exploitation in the next 30 days, higher than 38% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.1	4.9	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N`
CNA	3.1	4.9	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N`

Affected products

fledge-iot fledge

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /fledge-iot/fledge · third-party-advisory
github.com /fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py · third-party-advisory

Sources

CVE List: CVE-2026-71283
NVD: CVE-2026-71283

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary