Critical
Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-64712
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 10:54 UTC · Revision 1
Source evidence
Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write
core-osv · Original sourcePublished 4 Feb 2026, 17:34 UTC
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.
osv:CVE-2025-64712
Complete source record
{
"id": "52e9b8857030642060bab1b87537d4a07c83b35a6972cce681aec33dccb4ecdd",
"url": "https://osv.dev/vulnerability/CVE-2025-64712",
"method": "structured",
"payload": {
"kind": "advisory",
"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.",
"evidence": "osv:CVE-2025-64712",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2025-64712",
"aliases": [
"CVE-2025-64712",
"GHSA-gm8q-m8mv-jj5m",
"PYSEC-2026-558"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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"type": "GIT",
"events": [
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{
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
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],
"source": "REFERENCES_COMMIT"
},
{
"cpe": "cpe:2.3:a:unstructured:unstructured:*:*:*:*:*:python:*:*",
"range": [
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"introduced": "0"
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{
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"source": "CPE_RANGE"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-64712.json"
}
}
],
"modified": "2026-10-28T02:30:28.198242443Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64712.json",
"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-gm8q-m8mv-jj5m",
"https://nvd.nist.gov/vuln/detail/CVE-2025-64712",
"https://github.com/Unstructured-IO/unstructured/commit/b01d35b2373fd087d2e15162b9c021663c97155d"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22",
"CWE-73"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64712.json"
}
},
"related_cves": [
{
"value": "CVE-2025-64712",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 494748,
"published_at": "2026-02-04T17:34:51.426+00:00"
}