Vulnerability-Lookup

CVE-2025-64712 (GCVE-0-2025-64712)

Vulnerability from cvelistv5 – Published: 2026-02-04 17:34 – Updated: 2026-02-04 19:24

Title

Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write

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. Prior to version 0.18.18, a path traversal vulnerability in the partition_msg function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments. This issue has been patched in version 0.18.18.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73 - External Control of File Name or Path

Assigner

GitHub_M

References

2 references

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

Impacted products

1 product

Vendor	Product	Version
Unstructured-IO	unstructured	Affected: < 0.18.18

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-64712

Vulnerability from fkie_nvd - Published: 2026-02-04 18:16 - Updated: 2026-02-27 20:30

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/commit/b01d35b2373fd087d2e15162b9c021663c97155d	Patch
	security-advisories@github.com	https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-gm8q-m8mv-jj5m	Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	unstructured	unstructured	*

JSON

To clipboard

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        {
          "cpeMatch": [
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              "versionEndExcluding": "0.18.18",
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      "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. Prior to version 0.18.18, a path traversal vulnerability in the partition_msg function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments. This issue has been patched in version 0.18.18."
    },
    {
      "lang": "es",
      "value": "La librer\u00eda \u0027unstructured\u0027 proporciona componentes de c\u00f3digo abierto para la ingesta y el preprocesamiento de im\u00e1genes y documentos de texto, como PDF, HTML, documentos de Word y muchos m\u00e1s. Antes de la versi\u00f3n 0.18.18, una vulnerabilidad de salto de ruta en la funci\u00f3n \u0027partition_msg\u0027 permite a un atacante escribir o sobrescribir archivos arbitrarios en el sistema de archivos al procesar archivos MSG maliciosos con archivos adjuntos. Este problema ha sido parcheado en la versi\u00f3n 0.18.18."
    }
  ],
  "id": "CVE-2025-64712",
  "lastModified": "2026-02-27T20:30:48.700",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
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GHSA-GM8Q-M8MV-JJ5M

Vulnerability from github – Published: 2026-02-03 17:43 – Updated: 2026-02-04 19:53

Summary

Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write

Details

A Path Traversal vulnerability in the partition_msg function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments.

## Impact An attacker can craft a malicious .msg file with attachment filenames containing path traversal sequences (e.g., ../../../etc/cron.d/malicious). When processed with process_attachments=True, the library writes the attachment to an attacker-controlled path, potentially leading to:

Arbitrary file overwrite
Remote code execution (via overwriting configuration files, cron jobs, or Python packages)
Data corruption
Denial of service

## Affected Functionality The vulnerability affects the MSG file partitioning functionality when process_attachments=True is enabled.

## Vulnerability Details The library does not sanitize attachment filenames in MSG files before using them in file write operations, allowing directory traversal sequences to escape the intended output directory.

## Workarounds Until patched, users can: - Set process_attachments=False when processing untrusted MSG files - Avoid processing MSG files from untrusted sources - Implement additional filename validation before processing

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.18.17"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "unstructured"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.18.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-64712"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-73"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-03T17:43:56Z",
    "nvd_published_at": "2026-02-04T18:16:07Z",
    "severity": "CRITICAL"
  },
  "details": "A Path Traversal vulnerability in the `partition_msg` function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments.\n\n  ## Impact\n  An attacker can craft a malicious .msg file with attachment filenames containing path traversal sequences (e.g.,\n  `../../../etc/cron.d/malicious`). When processed with `process_attachments=True`, the library writes the attachment to an\n  attacker-controlled path, potentially leading to:\n\n  - Arbitrary file overwrite\n  - Remote code execution (via overwriting configuration files, cron jobs, or Python packages)\n  - Data corruption\n  - Denial of service\n\n  ## Affected Functionality\n  The vulnerability affects the MSG file partitioning functionality when `process_attachments=True` is enabled.\n\n  ## Vulnerability Details\n  The library does not sanitize attachment filenames in MSG files before using them in file write operations, allowing directory\n  traversal sequences to escape the intended output directory.\n\n  ## Workarounds\n  Until patched, users can:\n  - Set `process_attachments=False` when processing untrusted MSG files\n  - Avoid processing MSG files from untrusted sources\n  - Implement additional filename validation before processing",
  "id": "GHSA-gm8q-m8mv-jj5m",
  "modified": "2026-02-04T19:53:04Z",
  "published": "2026-02-03T17:43:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-gm8q-m8mv-jj5m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64712"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Unstructured-IO/unstructured/commit/b01d35b2373fd087d2e15162b9c021663c97155d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Unstructured-IO/unstructured"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write"
}

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.

Action not permitted

CVE-2025-64712 (GCVE-0-2025-64712)

FKIE_CVE-2025-64712

GHSA-GM8Q-M8MV-JJ5M

Tags

Sightings

Nomenclature