Description

Stirling-PDF is a locally hosted web application that allows you to perform various operations on PDF files. Versions starting in 2.1.5 and prior to 2.5.2 have Denial of Service (DoS) vulnerability in the Stirling-PDF watermark functionality (`/api/v1/security/add-watermark` endpoint). The vulnerability allows authenticated users to cause resource exhaustion and server crashes by providing extreme values for the `fontSize` and `widthSpacer` parameters. Version 2.5.2 patches the issue.

INFO

Published Date :

2026-03-26T16:58:07.485Z

Last Modified :

2026-03-26T17:34:32.654Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33438 vulnerability.

Vendors Products
Stirlingpdf
  • Stirling Pdf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33438.

URL Resource
https://github.com/Stirling-Tools/Stirling-PDF/security/advisories/GHSA-3932-2rfq-87xm cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact