# CVE-2026-26801: pdfmake SSRF — Fixed in 0.3.6

📦

📦 npm

Not in CISA KEV

HIGH severity

# CVE-2026-26801 — pdfmake

HIGH [Fix: bpampuch/pdfmake#2920](https://github.com/bpampuch/pdfmake/pull/2920)

CVE-2026-26801 is a high-severity (CVSS 7.5) Server-Side Request Forgery (SSRF) vulnerability in pdfmake. A fix is available for pdfmake — see the affected versions and patch details below.

pdfmake is vulnerable to server-side request forgery (SSRF)

Also known as[GHSA-wp52-r2fp-4vmr](/vulnerability/GHSA-wp52-r2fp-4vmr)

Published

Mar 10, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

## Exploitation Status

### No confirmed exploitation observed yet

-   CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
-   CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-26801.

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

0.5%probability of exploitation in next 30 days

Lower Risk+0.03%

Lower risk than most CVEs46th percentile — riskier than 46% of all scored CVEsHighest risk

0.00%0.37%0.74%1.11%0.0%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## How urgent is this, really

## Where this sits among everything scored

## Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

685other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

`pdfmake`npm

4.6Mdownloads / week

## Description

Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remote attacker to obtain sensitive information via the src/URLResolver.js component. The fix was released in version 0.3.6 which introduces the setUrlAccessPolicy() method allowing server operators to define URL access rules. A warning is now logged when pdfmake is used server-side without a policy configured.

## Affected Packages

1 total 1 fixed

Ecosystem

Package

Vulnerable range

Fix

📦npm

`pdfmake` 

≥ 0.3.0-beta.2&&< 0.3.6

0.3.6`npm install pdfmake@0.3.6`

## Affected Products

1 product · 20 configurations

Application

`pdfmake`pdfmake

≥ 0.3.1 && ≤ 0.3.5

1 version

0.3.0

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pdfmake, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Fix
    
    Update pdfmake to 0.3.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-26801 is resolved across your whole dependency graph.
    
3.  ### Workarounds
    
    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
    

## Frequently Asked Questions

Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remote attacker to obtain sensitive information via the src/URLResolver.js component. The fix was released in version 0.3.6 which introduces the setUrlAccessPolicy() method allowing server operators to define URL access rules. A warning is now logged when pdfmake is used server-side without a policy configured.

O3 Security · Impact-Aware SCA

### Is CVE-2026-26801 in your dependencies?

Find it across npm, including transitive dependencies.

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