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Vulnerability record · CVE-2026-71284 · published 5 August 2026

CVE-2026-71284: OS command injection vulnerability

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.

7.2 CVSS 3.1 High EPSS 0.92% · top 41.4% CWE-78 · OS command injection Deferred
7.2CVSS 3.1 base score
0.92%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
26 Aug 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-71284), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.