CVE-2026-71284

Fledge's backup-restore upload handler, upload_backup (python/fledge/services/core/api/backup_restore.py), takes the first extracted tar member's filename (tar_file_names[0]) and builds a shell command via string formatting. Because os.system invokes a shell and no quoting (shlex.quote, list-form subprocess) is applied, an admin uploading a crafted backup archive achieves arbitrary OS command execution.

Score

CVSS 3.1 7.2 High

Status

Deferred - 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Published

2026-08-05

Last modified

2026-10-23

Weaknesses

CWE-78

Affected products

• Fledge (Fledge-iot)

References

• https://github.com/fledge-iot/fledge
• https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py