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CVE

CVE-2026-71428

unstructured: Server-Side Request Forgery in the URL-based partitioning
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CVE

CVE-2026-71428

unstructured: Server-Side Request Forgery in the URL-based partitioning

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, partitionhtml, and partitionmd 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71428.json, https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7, https://nvd.nist.gov/vuln/detail/CVE-2026-71428, https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd, https://github.com/Unstructured-IO/unstructured/pull/4388

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.00436%
EPSS Percentile
0.35353%
Introduced Version
962de78def1d34aad1ee5acc2ab7804367d49180,0
Fix Available
445c95735c4045057f51f399bc04c657751923bd,2.7.3-r28,0.11.3-r3

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