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    4 vulnerabilities by fledge-iot

    CVE-2026-71284 (GCVE-0-2026-71284)

    Vulnerability from nvd – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:52
    VLAI
    Title
    Fledge IoT Gateway Backup Restore OS Command Injection via Tar Member Filename
    Summary
    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.
    Severity
    7.2 (High)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    fledge-iot fledge Affected: 0 , ≤ 3.1.0 (semver)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

    {
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    CVE-2026-71283 (GCVE-0-2026-71283)

    Vulnerability from nvd – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:53
    VLAI
    Title
    Fledge IoT Gateway Backup Restore Tar Path Traversal
    Summary
    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. A crafted tar archive containing member names with `../` path components extracts files outside the intended temporary directory, allowing arbitrary file writes anywhere on the filesystem reachable by the Fledge process. Requires the admin role (@has_permission("admin")).
    Severity
    4.9 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    fledge-iot fledge Affected: 0 , ≤ 3.1.0 (semver)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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    CVE-2026-71284 (GCVE-0-2026-71284)

    Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:52
    VLAI
    Title
    Fledge IoT Gateway Backup Restore OS Command Injection via Tar Member Filename
    Summary
    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.
    Severity
    7.2 (High)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    fledge-iot fledge Affected: 0 , ≤ 3.1.0 (semver)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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    CVE-2026-71283 (GCVE-0-2026-71283)

    Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:53
    VLAI
    Title
    Fledge IoT Gateway Backup Restore Tar Path Traversal
    Summary
    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. A crafted tar archive containing member names with `../` path components extracts files outside the intended temporary directory, allowing arbitrary file writes anywhere on the filesystem reachable by the Fledge process. Requires the admin role (@has_permission("admin")).
    Severity
    4.9 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    fledge-iot fledge Affected: 0 , ≤ 3.1.0 (semver)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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