CVE-2025-65108 md-to-pdf is vulnerable to arbitrary JavaScript code execution when parsing front matter
Attackers can execute arbitrary code by crafting malicious Markdown front matter, affecting users of the md-to-pdf library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-65108?
CVE-2025-65108 is a critical code injection vulnerability in simonhaenisch md-to-pdf, published on 21 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
md-to-pdf is a CLI tool for converting Markdown files to PDF using Node.js and headless Chrome. Prior to version 5.2.5, a Markdown front-matter block that contains JavaScript delimiter causes the JS engine in gray-matter library to execute arbitrary code in the Markdown to PDF converter process of md-to-pdf library, resulting in remote code execution. This issue has been patched in version 5.2.5.
Weakness: CWE-94
Which versions are affected by CVE-2025-65108?
2 open source packages ship an affected version, including md-to-pdf.
| Package | Affected | Fixed in |
|---|---|---|
md-to-pdf npm | All versions | 5.2.5 |
md-to-pdf npm | All versions | 5.2.5 |
How do I fix CVE-2025-65108?
Upgrade md-to-pdf to 5.2.5 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-65108 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65108 exists.
Sources
Also known as GHSA-547r-qmjm-8hvw.