Vulnerability-Lookup

CVE-2026-71428 (GCVE-0-2026-71428)

Vulnerability from cvelistv5 – Published: 2026-08-20 16:43 – Updated: 2026-08-20 16:43

Title

unstructured: Server-Side Request Forgery in the URL-based partitioning

Summary

The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0.

Severity

9.3 (Critical)


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

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/Unstructured-IO/unstructured/s…	x_refsource_CONFIRM
https://github.com/Unstructured-IO/unstructured/p…	x_refsource_MISC
https://github.com/Unstructured-IO/unstructured/c…	x_refsource_MISC
https://github.com/Unstructured-IO/unstructured/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
Unstructured-IO	unstructured	Affected: >= 0.4.7, < 0.24.0	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "unstructured",
          "vendor": "Unstructured-IO",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.4.7, \u003c 0.24.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T16:43:01.306Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7"
        },
        {
          "name": "https://github.com/Unstructured-IO/unstructured/pull/4388",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Unstructured-IO/unstructured/pull/4388"
        },
        {
          "name": "https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd"
        },
        {
          "name": "https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0"
        }
      ],
      "source": {
        "advisory": "GHSA-4mvj-m6j5-pmf7",
        "discovery": "UNKNOWN"
      },
      "title": "unstructured: Server-Side Request Forgery in the URL-based partitioning"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-71428",
    "datePublished": "2026-08-20T16:43:01.306Z",
    "dateReserved": "2026-08-06T16:28:51.182Z",
    "dateUpdated": "2026-08-20T16:43:01.306Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-71428",
      "date": "2026-08-22",
      "epss": "0.0025",
      "percentile": "0.16722"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-71428\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-20T17:19:40.773\",\"lastModified\":\"2026-08-20T17:19:40.773\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"Unstructured-IO\",\"product\":\"unstructured\",\"versions\":[{\"version\":\"\u003e= 0.4.7, \u003c 0.24.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N\",\"baseScore\":9.3,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.7}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-601\"},{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"references\":[{\"url\":\"https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/Unstructured-IO/unstructured/pull/4388\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

FKIE_CVE-2026-71428

Vulnerability from fkie_nvd - Published: 2026-08-20 17:19 - Updated: 2026-08-20 17:19

Severity

9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/pull/4388
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "unstructured",
          "vendor": "Unstructured-IO",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.4.7, \u003c 0.24.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0."
    }
  ],
  "id": "CVE-2026-71428",
  "lastModified": "2026-08-20T17:19:40.773",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-20T17:19:40.773",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Unstructured-IO/unstructured/pull/4388"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

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.

Action not permitted

CVE-2026-71428 (GCVE-0-2026-71428)

FKIE_CVE-2026-71428

Tags

Sightings

Nomenclature