Vulnerability details
CVE-2026-71428
unstructured: Server-Side Request Forgery in the URL-based partitioning
Official 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. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Unstructured-IO | unstructured | >= 0.4.7, < 0.24.0 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7 x_refsource_CONFIRM
- https://github.com/Unstructured-IO/unstructured/pull/4388 x_refsource_MISC
- https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd x_refsource_MISC
- https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0 x_refsource_MISC
Details
- Published
- 2026-08-20
- Last updated
- 2026-08-25
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-601URL Redirection to Untrusted Site ('Open Redirect')
- CWE-918Server-Side Request Forgery (SSRF)