Open Redirect in unstructured (CVE-2026-71428)
Summary
Vulnerability in unstructured (CVE-2026-71428). Confidential information can be exposed externally. Exploitable via unstructured. Mitigation: upgrade to 0.24.0 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-71428 has been found in unstructured.
Attackers can target a specific entry point like unstructured over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 9.3/10.
What to do: upgrade unstructured to 0.24.0 or later.
If unsure, ask your IT team or search "unstructured CVE-2026-71428" on the vendor's site.
CVE-2026-71428 (unstructured) — CWE-601 / CVSS v3 9.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: unstructured / Element / UnstructuredURLLoader / UnstructuredReader
Patched: 0.24.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-601) exists in unstructured. Attackers reach the vulnerable code path via unstructured without authentication.
Check the vendor advisory for the affected versions of unstructured. Attack surface: unstructured / Element / UnstructuredURLLoader / UnstructuredReader.
Severity: Critical (CVSS 9.3/10). Confidential information can be exposed externally.
Update to 0.24.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'unstructured' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'unstructured' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
unstructuredを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade unstructured to 0.24.0ステージング環境で 0.24.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- patch github.com
- patch github.com
- web github.com
- web github.com