CVE-2026-71428unstructured: Server-Side Request Forgery in the URL-based partitioning
- 9.3CriticalCVSS base score
- 0.44%Exploitation in 30 daysEPSS · top 62% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By GitHub_M
- 14 days later
· 14 days later
Published
- 5 days later
· 5 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Critical9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.44% · top 62% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Affected products
Unstructured-IO · unstructured
- affected >= 0.4.7, < 0.24.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIunstructuredGHSA-4mvj-m6j5-pmf7 (opens in a new tab)
References
References4
- https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/Unstructured-IO/unstructured/pull/4388 (opens in a new tab)x_refsource_MISC
- https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd (opens in a new tab)x_refsource_MISC
- https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-63472 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4mvj-m6j5-pmf7 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-71428)Record last updated .