{"id":"CVE-2026-104250","published":"2026-10-13T17:17:15.900","lastModified":"2026-10-16T16:00:33.533","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 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.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79","CWE-116"],"vendors":[],"products":[],"references":[{"url":"https://github.com/Unstructured-IO/unstructured/commit/cda16b3f2170019be9c6ea5635946fb3eaa2d66f","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/pull/4394","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.1","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9","tags":[]}],"exploitRefs":[{"url":"https://github.com/Unstructured-IO/unstructured/commit/cda16b3f2170019be9c6ea5635946fb3eaa2d66f","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/pull/4394","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.1","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9","tags":[]},{"url":"https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-v5mq-3xhg-98m9","tags":[]}],"hasPoc":true,"ai":null}