{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71284", "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "state": "PUBLISHED", "assignerShortName": "TuranSec", "dateReserved": "2026-08-05T12:23:34.968Z", "datePublished": "2026-08-05T12:26:30.030Z", "dateUpdated": "2026-08-05T12:26:30.030Z"}, "containers": {"cna": {"title": "Fledge IoT Gateway Backup Restore OS Command Injection via Tar Member Filename", "descriptions": [{"lang": "en", "value": "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: `cmd = \"cp {} {}\".format(source, backup_path); ret_code = os.system(cmd)`. The only pre-check on the filename is a prefix/suffix match (startswith(backup_prefix), endswith(valid_extensions)), which a name such as `fledge_backup_$(id>/tmp/pwn).db` satisfies while still injecting a shell command substitution. 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-78", "cweId": "CWE-78", "type": "CWE"}]}], "affected": [{"vendor": "fledge-iot", "product": "fledge", "programFiles": ["python/fledge/services/core/api/backup_restore.py"], "versions": [{"version": "0", "lessThanOrEqual": "3.1.0", "status": "affected", "versionType": "semver"}], "defaultStatus": "unaffected"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/fledge-iot/fledge"}, {"url": "https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py"}], "credits": [{"lang": "en", "value": "Alibek Baxtiyorov", "type": "finder"}], "providerMetadata": {"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "shortName": "TuranSec", "dateUpdated": "2026-08-05T12:26:30.030Z"}}}}

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