CVE-2025-64712: Unstructured

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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 products

• Unstructured Unstructured: before 0.18.18 (fixed in 0.18.18)

Published 2026-02-04. Last modified 2026-06-17.