CVE-2026-26801Public exploitNetwork attack vector

Internal data disclosure via unrestricted URL fetching

Published Mar 10, 2026 · Updated Mar 10, 2026

SSRF in pdfmake 0.3.0-beta.2 through 0.3.5 allows remote attackers to read HTTP responses through server-side PDF generation. URLResolver passes URLs from images, fonts, attachments, and files directly to fetch without validating their destinations, while attachment and file reuse can embed the raw response in the output PDF. The full-read path requires a server application to pass an attacker-controlled document definition to pdfmake; browser-side use is not affected.

CVSS severity7.5
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in pdfmake 0.3.0-beta.2 through 0.3.5 allows remote attackers to read HTTP responses through server-side PDF generation. URLResolver passes URLs from images, fonts, attachments, and files directly to fetch without validating their destinations, while attachment and file reuse can embed the raw response in the output PDF. The full-read path requires a server application to pass an attacker-controlled document definition to pdfmake; browser-side use is not affected.

The record

CVE
CVE-2026-26801
Published
Mar 10, 2026
Updated
Mar 10, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

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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