CVE-2026-104250

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 0.24.1, partition_html(html_parser_version="v2") and the VLM partitioner can preserve untrusted document tags, attributes, text, and link targets in metadata.text_as_html, while elements_to_html() emits the result as an HTML document. The to_html() path in unstructured/documents/ontology.py does not escape output or reject unsafe URL schemes, allowing event-handler attributes, attribute breakout markup, and javascript: links to survive parsing. When the generated HTML or text_as_html is rendered in a browser, attacker-controlled script can execute in the viewer's origin, including in document-ingestion workflows where a privileged reviewer opens submitted content. This issue is fixed in version 0.24.1.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/Unstructured-IO/unstructured/commit/cda16b3f2170019be9c6ea5635946fb3eaa2d66f
https://github.com/Unstructured-IO/unstructured/pull/4394
https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.1
https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9
https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9

Configurations

No configuration.

History

14 Oct 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9 -~~	() https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9 -

13 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 17:17

Updated : 2026-10-16 16:00

NVD link : CVE-2026-104250

Mitre link : CVE-2026-104250

CVE.ORG link : CVE-2026-104250

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-116

Improper Encoding or Escaping of Output

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