CVE-2026-71270Network attack vector

Internal resource disclosure via unfiltered embedded URLs

Published Aug 5, 2026 · Updated Aug 5, 2026

SSRF in all versions of Stirling PDF allows remote attackers to read internal resources through the URL-to-PDF conversion endpoint. ConvertWebsiteToPDF checks only the initial public URL before passing unsanitized HTML to WeasyPrint, which fetches embedded URLs without SSRF filtering. An attacker-controlled public page can make the unauthenticated server request cloud metadata or internal services and include retrieved content in the generated PDF.

CVSS severity8.6
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in all versions of Stirling PDF allows remote attackers to read internal resources through the URL-to-PDF conversion endpoint. ConvertWebsiteToPDF checks only the initial public URL before passing unsanitized HTML to WeasyPrint, which fetches embedded URLs without SSRF filtering. An attacker-controlled public page can make the unauthenticated server request cloud metadata or internal services and include retrieved content in the generated PDF.

The record

CVE
CVE-2026-71270
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Stirling PDF
Product
Stirling PDF
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Stirling PDF · Stirling PDFversion=0 <=*

Published CVSS scores

8.6TuranSecCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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