Open Redirect Affecting nemo package, versions <2.7.3-r28
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 Sept 2026
- disclosed20 Aug 2026
Introduced: 20 Aug 2026
CVE-2026-71428 (opens in a new tab)How to fix?
Upgrade Chainguard nemo to version 2.7.3-r28 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nemo package and not the nemo package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
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.
References
- https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd
- https://github.com/Unstructured-IO/unstructured/pull/4388
- https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0
- https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7