RCE in Fledge-Iot Fledge
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.005 (39.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Fledge-iot Fledge — versions 0
Weakness classification (CWE)
References
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (third-party-advisory)
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71284?
- CVE-2026-71284 is a high-severity vulnerability in Fledge-Iot Fledge, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-08-05.
- How severe is CVE-2026-71284?
- High severity. CVSS v3 base score is 7.2 out of 10.