Vulnerability-Lookup

FKIE_CVE-2026-71284

Vulnerability from fkie_nvd - Published: 2026-08-05 13:24 - Updated: 2026-08-26 17:13

Severity

7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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. 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.

References

	URL	Tags
	309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c	https://github.com/fledge-iot/fledge
	309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c	https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "fledge",
          "programFiles": [
            "python/fledge/services/core/api/backup_restore.py"
          ],
          "vendor": "fledge-iot",
          "versions": [
            {
              "lessThanOrEqual": "3.1.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Fledge\u0027s backup-restore upload handler, upload_backup (python/fledge/services/core/api/backup_restore.py), takes the first extracted tar member\u0027s 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."
    }
  ],
  "id": "CVE-2026-71284",
  "lastModified": "2026-08-26T17:13:24.800",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
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            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-05T15:52:35.521988Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-05T13:24:53.093",
  "references": [
    {
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
      "url": "https://github.com/fledge-iot/fledge"
    },
    {
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
      "url": "https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py"
    }
  ],
  "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
      "type": "Secondary"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:47

Title

Fledge IoT Gateway Backup Restore OS Command Injection via Tar Member Filename

Summary

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 · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 15:52 UTC

CWE

CWE-78

Assigner

TuranSec redhat root

References

2 references

URL	Tags
https://github.com/fledge-iot/fledge	third-party-advisory
https://github.com/fledge-iot/fledge/blob/main/py…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
fledge-iot	fledge	Affected: 0 , ≤ 3.1.0 (semver)

Date Public

2026-08-05 12:26

Credits

Alibek Baxtiyorov

Show details on NVD website

JSON

To clipboard

{
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        "metrics": [
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                "id": "CVE-2026-71284",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T15:52:35.521988Z",
                "version": "2.0.3"
              },
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
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    "cna": {
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          "defaultStatus": "unaffected",
          "product": "fledge",
          "programFiles": [
            "python/fledge/services/core/api/backup_restore.py"
          ],
          "vendor": "fledge-iot",
          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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      "credits": [
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          "type": "finder",
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        }
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            }
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
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          "url": "https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Fledge IoT Gateway Backup Restore OS Command Injection via Tar Member Filename"
    }
  },
  "cveMetadata": {
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    "datePublished": "2026-08-05T12:26:30.030Z",
    "dateReserved": "2026-08-05T12:23:34.968Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.