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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0093
Remote Code Execution vulnerability in Unstructured.io

Original Issue Date:February 17, 2026

Severity Rating: CRITICAL

Software Affected

  • Unstructured-IO versions prior to 0.18.18

Overview

A critical path traversal vulnerability has been reported in Unstructured-IO library which could allow an unauthenticated remote attacker to execute arbitrary code on the target system.

Target Audience:
Individuals and end-user organisations using affected Unstructured-IO.

Risk Assessment:
Risk of unauthorized access, data tampering, or full system compromise.

Impact Assessment:
High potential of arbitrary code execution.

Description

The Unstructured.io library is an open-source toolkit for ingesting and pre-processing unstructured data such as PDFs, HTML, Word documents, images, and email files. It is widely used in AI pipelines and document processing workflows to convert raw files into machine-readable text.

This vulnerability exists due to improper sanitization of attachment filenames during the extraction and temporary storage of specially crafted Microsoft Outlook (.msg) files, enabling directory traversal and arbitrary file write.

Successful exploitation of this vulnerability could allow an unauthorized remote attacker to execute arbitrary code on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:
https://gbhackers.com/cve-2025-64712-in-unstructured-io/

Vendor Information

Unstructured.io
https://gbhackers.com/cve-2025-64712-in-unstructured-io/

References

Unstructured.io
https://gbhackers.com/cve-2025-64712-in-unstructured-io/

CVE Name
CVE-2025-64712

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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