---
title: "Discussion on \"From PDF file uploads to server hijacking: An in-depth analysis of the Ghostscript vulnerability CVE-2026-39919\" | Hashnode"
description: "Discussion on \"From PDF file uploads to server hijacking: An in-depth analysis of the Ghostscript vulnerability CVE-2026-39919\". Introduction to Ghostscript\nIf you are running a WordPress website, a content management system (CMS) or an online application portal, chances are your server is running Ghostscript every day without"
url: "https://hashnode.com/posts/from-pdf-file-uploads-to-server-hijacking-an-in-depth-analysis-of-the-ghostscript-vulnerability-cve-2026-39919/6ad9795871b5a7056efdcc61"
---

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# [From PDF file uploads to server hijacking: An in-depth analysis of the Ghostscript vulnerability CVE-2026-39919](https://blog.fiscybersec.com/from-pdf-file-uploads-to-server-hijacking-an-in-depth-analysis-of-the-ghostscript-vulnerability-cve-2026-39919?utm_source=hashnode&utm_medium=feed)

Introduction to Ghostscript If you are running a WordPress website, a content management system (CMS) or an online application portal, chances are your server is running Ghostscript every day without

Oct 22 · 14 min read · blog.fiscybersec.com  
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-   [#threat-intelligence](https://hashnode.com/tag/threat-intelligence)
-   [#pdf](https://hashnode.com/tag/pdf)
-   [#server-hijacking](https://hashnode.com/tag/server-hijacking)
-   [#ghostscript](https://hashnode.com/tag/ghostscript)
-   [#cve-2026-39919](https://hashnode.com/tag/cve-2026-39919)
-   [#wordpress](https://hashnode.com/tag/wordpress)
-   [#cms](https://hashnode.com/tag/cms)
-   [#rce](https://hashnode.com/tag/rce)

## Written by

[Lưu Tuấn Anh](https://hashnode.com/@anhlt120)

@anhlt120

  
[View profile](https://hashnode.com/@anhlt120)

## Responses 1

Markdown supported · ⌘↵ to post

[Abhinav Sharma](https://hashnode.com/@abhinavs1920)

[Oct 22](https://hashnode.com/posts/from-pdf-file-uploads-to-server-hijacking-an-in-depth-analysis-of-the-ghostscript-vulnerability-cve-2026-39919/6ad9795871b5a7056efdcc61/comment/6ad98aa05cf25be9f5edf9cc)

The -dSAFER finding is the uncomfortable part, since that flag is the mitigation most upload pipelines reach for first. Ghostscript sitting as a hidden dependency behind every innocent PDF preview feature is exactly why this class of bug keeps resurfacing.