Vulnerability record · CVE-2021-23639 · published 10 December 2021

CVE-2021-23639: Markdown to pdf project markdown to pdf vulnerability

Markdown To Pdf Project · Markdown To Pdf

The package md-to-pdf before 5.0.0 are vulnerable to Remote Code Execution (RCE) due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine.

9.8 CVSS 3.1 Critical EPSS 5.3% · top 7.7%

9.8CVSS 3.1 base score, v2 7.5

5.3%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 4 tagged exploit

17 Jun 2026Last modified by NVD

Description

The package md-to-pdf before 5.0.0 are vulnerable to Remote Code Execution (RCE) due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Markdown To Pdf Markdown To Pdf Project

References

Link	Tags
https://github.com/simonhaenisch/md-to-pdf/commit/a716259c548c82fa1d3b14a3422e9100619d2d8a	PatchThird Party Advisory
https://github.com/simonhaenisch/md-to-pdf/issues/99	ExploitIssue TrackingPatchThird Party Advisory
https://snyk.io/vuln/SNYK-JS-MDTOPDF-1657880	ExploitPatchThird Party Advisory
https://github.com/simonhaenisch/md-to-pdf/commit/a716259c548c82fa1d3b14a3422e9100619d2d8a	PatchThird Party Advisory
https://github.com/simonhaenisch/md-to-pdf/issues/99	ExploitIssue TrackingPatchThird Party Advisory
https://snyk.io/vuln/SNYK-JS-MDTOPDF-1657880	ExploitPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-23639), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.