AIKIDO-2026-148185
unstructured is vulnerable to Cross-Site Scripting (XSS)
61
Medium Risk
This Affects:
unstructuredTL;DR
The v2 ontology HTML output path builds HTML from parsed document content without escaping element text or attribute values. Markup contained in an untrusted input document passes through into metadata.text_as_html and elements_to_html() output unchanged. When someone renders that output in a browser, the embedded script executes in their session, producing stored cross-site scripting. The fix centralizes a sanitization policy that escapes text and attribute values, drops event-handler attributes, allowlists tags and attributes, and filters unsafe URL schemes.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you render HTML produced from untrusted documents via the v2 ontology path.
Background info
unstructured is vulnerable to Cross-Site Scripting (XSS) in versions 0.0.1 - 0.24.0.
How to fix this
Upgrade the unstructured library to the patch version.
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