{"id":"CVE-2025-64712","aliases":["EUVD-2025-206785","GHSA-gm8q-m8mv-jj5m","PYSEC-2026-558"],"status":"published","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00687,"percentile":0.53112,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22","CWE-73"],"published":"2026-02-03T17:43:56Z","modified":"2026-10-28T02:30:28Z","fixes":[{"ecosystem":"PyPI","package":"unstructured","fixed_in":["0.18.18"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"unstructured","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.18.17"},{"fixed":"0.18.18"}]}]},{"source":"osv","ecosystem":"PyPI","package":"unstructured","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.18.18"}]}],"versions":["0.0.1.dev0","0.10.0","0.10.1","0.10.10","0.10.11","0.10.12","0.10.13","0.10.14","0.10.15","0.10.16","0.10.18","0.10.19","0.10.19.dev18","0.10.2","0.10.20","0.10.21","0.10.22","0.10.23","0.10.24","0.10.25","0.10.26","0.10.27","0.10.28","0.10.29","0.10.30","0.10.4","0.10.5","0.10.6","0.10.7","0.10.8","0.10.9","0.11.0","0.11.1","0.11.2","0.11.4","0.11.5","0.11.6","0.11.7","0.11.8","0.12.0","0.12.2","0.12.3","0.12.4","0.12.5","0.12.6","0.13.0","0.13.1","0.13.2","0.13.3","0.13.4","0.13.5","0.13.6","0.13.7","0.14.0","0.14.10","0.14.2","0.14.2.dev1","0.14.3","0.14.4","0.14.5","0.14.6","0.14.7","0.14.8","0.14.9","0.15.0","0.15.1","0.15.10","0.15.12","0.15.13","0.15.14","0.15.3","0.15.5","0.15.6","0.15.7","0.15.8","0.15.9","0.16.0","0.16.1","0.16.10","0.16.11","0.16.12","0.16.13","0.16.14","0.16.15","0.16.16","0.16.17","0.16.19","0.16.2","0.16.20","0.16.21","0.16.22","0.16.23","0.16.24","0.16.25","0.16.3","0.16.4","0.16.5","0.16.6","0.16.7","0.16.8","0.16.9","0.17.0","0.17.2","0.18.1","0.18.11","0.18.13","0.18.14","0.18.15","0.18.2","0.18.3","0.18.5","0.18.6","0.18.7","0.18.9","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.2.5","0.2.6.dev1","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.4.0","0.4.1","0.4.10","0.4.11","0.4.12","0.4.13","0.4.14","0.4.15","0.4.16","0.4.2","0.4.3","0.4.4","0.4.6","0.4.7","0.4.8","0.4.9","0.5.0","0.5.1","0.5.10","0.5.11","0.5.12","0.5.13","0.5.2","0.5.3","0.5.4","0.5.6","0.5.7","0.5.8","0.5.9","0.6.0","0.6.1","0.6.10","0.6.11","0.6.2","0.6.3","0.6.4","0.6.5","0.6.6","0.6.7","0.6.8","0.6.9","0.7.0","0.7.1","0.7.10","0.7.11","0.7.12","0.7.2","0.7.3","0.7.4","0.7.5","0.7.6","0.7.7","0.7.8","0.7.9","0.8.0","0.8.1","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.9.0","0.9.1","0.9.2","0.9.3"]},{"source":"osv","ecosystem":"PyPI","package":"unstructured","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.18.18"}]}],"versions":["0.0.1.dev0","0.10.0","0.10.1","0.10.10","0.10.11","0.10.12","0.10.13","0.10.14","0.10.15","0.10.16","0.10.18","0.10.19","0.10.19.dev18","0.10.2","0.10.20","0.10.21","0.10.22","0.10.23","0.10.24","0.10.25","0.10.26","0.10.27","0.10.28","0.10.29","0.10.30","0.10.4","0.10.5","0.10.6","0.10.7","0.10.8","0.10.9","0.11.0","0.11.1","0.11.2","0.11.4","0.11.5","0.11.6","0.11.7","0.11.8","0.12.0","0.12.2","0.12.3","0.12.4","0.12.5","0.12.6","0.13.0","0.13.1","0.13.2","0.13.3","0.13.4","0.13.5","0.13.6","0.13.7","0.14.0","0.14.10","0.14.2","0.14.2.dev1","0.14.3","0.14.4","0.14.5","0.14.6","0.14.7","0.14.8","0.14.9","0.15.0","0.15.1","0.15.10","0.15.12","0.15.13","0.15.14","0.15.3","0.15.5","0.15.6","0.15.7","0.15.8","0.15.9","0.16.0","0.16.1","0.16.10","0.16.11","0.16.12","0.16.13","0.16.14","0.16.15","0.16.16","0.16.17","0.16.19","0.16.2","0.16.20","0.16.21","0.16.22","0.16.23","0.16.24","0.16.25","0.16.3","0.16.4","0.16.5","0.16.6","0.16.7","0.16.8","0.16.9","0.17.0","0.17.2","0.18.1","0.18.11","0.18.13","0.18.14","0.18.15","0.18.2","0.18.3","0.18.5","0.18.6","0.18.7","0.18.9","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.2.5","0.2.6.dev1","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.4.0","0.4.1","0.4.10","0.4.11","0.4.12","0.4.13","0.4.14","0.4.15","0.4.16","0.4.2","0.4.3","0.4.4","0.4.6","0.4.7","0.4.8","0.4.9","0.5.0","0.5.1","0.5.10","0.5.11","0.5.12","0.5.13","0.5.2","0.5.3","0.5.4","0.5.6","0.5.7","0.5.8","0.5.9","0.6.0","0.6.1","0.6.10","0.6.11","0.6.2","0.6.3","0.6.4","0.6.5","0.6.6","0.6.7","0.6.8","0.6.9","0.7.0","0.7.1","0.7.10","0.7.11","0.7.12","0.7.2","0.7.3","0.7.4","0.7.5","0.7.6","0.7.7","0.7.8","0.7.9","0.8.0","0.8.1","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.9.0","0.9.1","0.9.2","0.9.3"]}],"products":[{"vendor":"unstructured","product":"unstructured"},{"vendor":"unstructured-io","product":"unstructured"}],"references":[{"url":"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-gm8q-m8mv-jj5m","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/Unstructured-IO/unstructured/commit/b01d35b2373fd087d2e15162b9c021663c97155d","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64712","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-gm8q-m8mv-jj5m","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64712.json","tags":["advisory"]},{"url":"https://github.com/Unstructured-IO/unstructured","tags":["package"]},{"url":"https://pypi.org/project/unstructured","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-64712","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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.","status":"published","published":"2026-02-04T17:34:51.426Z","modified":"2026-02-04T19:24:12.411Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-22","CWE-73"],"updated_at":"2026-11-02T14:32:47.08757Z"}],"euvd":[{"id":"EUVD-2025-206785","description":"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.","status":"published","published":"2026-02-04T17:34:51Z","modified":"2026-02-04T19:24:12Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:48:44.193176Z"}],"ghsa":[{"id":"GHSA-gm8q-m8mv-jj5m","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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","status":"published","published":"2026-02-03T17:43:56Z","modified":"2026-02-04T19:53:06Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22","CWE-73"],"updated_at":"2026-11-02T14:39:22.637668Z"}],"nvd":[{"id":"CVE-2025-64712","description":"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.","status":"published","published":"2026-02-04T18:16:07.37Z","modified":"2026-06-17T09:55:05.323Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-22","CWE-73"],"updated_at":"2026-11-02T14:11:59.832225Z"}],"osv":[{"id":"CVE-2025-64712","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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.","status":"published","published":"2026-02-04T17:34:51.426Z","modified":"2026-10-28T02:30:28.198242443Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22","CWE-73"],"updated_at":"2026-11-02T15:44:51.851511Z"},{"id":"GHSA-gm8q-m8mv-jj5m","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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","status":"published","published":"2026-02-03T17:43:56Z","modified":"2026-09-10T03:50:34.982019627Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22","CWE-73"],"updated_at":"2026-11-02T15:46:47.822182Z"},{"id":"PYSEC-2026-558","title":"Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write","description":"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","status":"published","published":"2026-06-29T11:50:51.107727Z","modified":"2026-07-13T16:15:34.752594062Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:57.671918Z"}]}}