CVE-2026-71428Public exploitNetwork attack vector

Internal response disclosure via unvalidated URL fetches

Published Aug 20, 2026 · Updated Aug 25, 2026

SSRF in Unstructured 0.4.7 through 0.23.3 allows remote attackers to read internal HTTP responses via URL-based partitioning. The partition, partition_html, and partition_md paths pass attacker-controlled URLs to requests.get without validating hosts, redirects, or resolved addresses. Exploitation requires a server-side application to pass untrusted URLs into these APIs and can disclose loopback, internal-service, or cloud-metadata responses or trigger side-effecting GET endpoints.

CVSS severity9.3
Critical
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Unstructured 0.4.7 through 0.23.3 allows remote attackers to read internal HTTP responses via URL-based partitioning. The partition, partition_html, and partition_md paths pass attacker-controlled URLs to requests.get without validating hosts, redirects, or resolved addresses. Exploitation requires a server-side application to pass untrusted URLs into these APIs and can disclose loopback, internal-service, or cloud-metadata responses or trigger side-effecting GET endpoints.

The record

CVE
CVE-2026-71428
Published
Aug 20, 2026
Updated
Aug 25, 2026
Vendor
Unstructured
Product
Unstructured
Classifications
CWE-601, CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.4.7, < 0.24.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Unstructured · Unstructuredversion=>= 0.4.7, < 0.24.0

Published CVSS scores

9.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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