Is this vulnerability remotely exploitable?

Yes. If an external user can influence document content or resource URLs used by a server-side pdfmake instance, they can remotely trigger server-side requests within the hosting environment.

What level of access does an attacker need to exploit this?

The attacker typically only needs the ability to supply or control the PDF content, template, or parameters that pdfmake uses—commonly via a web API or form that generates PDFs on demand.

What is the safest general fix pattern?

Implement a strict URL access policy for all server-side URL resolution, limiting destinations to a narrow, documented allowlist and rejecting anything outside those rules, alongside running the rendering service in a tightly constrained network environment.

Severity:

HIGH RISK

(7.5)

Server-Side Request Forgery (CWE-918) in pdfmake URLResolver

CVE-2026-26801

Published:

Mar 10, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-918

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

Unauthorized Access to Internal Resources via SSRF

May 6, 2026

CWE-863

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Information Disclosure via Server-Side Network Access

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Information Disclosure via Server-Side Network Access

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Server-Side Request Forgery (CWE-918) in pdfmake URLResolver

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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