---
id: CVE-2022-25863
title: >-
  The package gatsby-plugin-mdx before 2.14.1, from 3.0.0 and before 3.15.2 are
  vulnerable to Deserialization of Untrusted Data when passing input through to
  the gray-matter package, due to its default configurations that are missing
  input…
summary: >-
  The package gatsby-plugin-mdx before 2.14.1, from 3.0.0 and before 3.15.2 are
  vulnerable to Deserialization of Untrusted Data when passing input through to
  the gray-matter package, due to its default configurations that are missing
  input…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-502
vendor: gatsbyjs
product: gatsby-plugin-mdx
affected:
  - gatsby-plugin-mdx < 2.14.1
  - 'gatsby-plugin-mdx >= 3.0.0, < 3.15.2'
patched:
  - gatsby-plugin-mdx 3.15.2
published: '2022-06-10'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T15:50:31.907'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-25863'
references:
  - url: >-
      https://drive.google.com/file/d/1EoCzbwTWOM8-fjvwMbH3bqcZ2iKksxTW/view?usp=sharing
    label: report@snyk.io
  - url: 'https://github.com/gatsbyjs/gatsby/pull/35830'
    label: report@snyk.io
  - url: >-
      https://github.com/gatsbyjs/gatsby/pull/35830/commits/f214eb0694c61e348b2751cecd1aace2046bc46e
    label: report@snyk.io
  - url: 'https://snyk.io/vuln/SNYK-JS-GATSBYPLUGINMDX-2405699'
    label: report@snyk.io
  - url: >-
      https://drive.google.com/file/d/1EoCzbwTWOM8-fjvwMbH3bqcZ2iKksxTW/view?usp=sharing
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/gatsbyjs/gatsby/pull/35830'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/gatsbyjs/gatsby/pull/35830/commits/f214eb0694c61e348b2751cecd1aace2046bc46e
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://snyk.io/vuln/SNYK-JS-GATSBYPLUGINMDX-2405699'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01962
epssPercentile: 0.79542
ingestedAt: '2026-09-29T16:39:33.221Z'
---

## Overview

The package gatsby-plugin-mdx before 2.14.1, from 3.0.0 and before 3.15.2 are vulnerable to Deserialization of Untrusted Data when passing input through to the gray-matter package, due to its default configurations that are missing input sanitization. Exploiting this vulnerability is possible when passing input in both webpack (MDX files in src/pages or MDX file imported as a component in frontend / React code) and data mode (querying MDX nodes via GraphQL). Workaround: If an older version of gatsby-plugin-mdx must be used, input passed into the plugin should be sanitized ahead of processing.

## Affected

- `gatsby-plugin-mdx < 2.14.1`
- `gatsby-plugin-mdx >= 3.0.0, < 3.15.2`

## Remediation

Upgrade past the affected range:

- `gatsby-plugin-mdx 3.15.2`