CVE-2025-64712

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

Published 4 Feb 2026Modified 17 Jun 2026CWE 22, 73

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by GHSA.

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.

Affected packages and fixed versions

Source	Package	Fixed in
pip::GitHub Security Advisory pip	unstructured	0.18.18
chainguard	nemo	2.6.1-r4

References

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