High · published June 11, 2022
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.
| Product | Versions | Fixed in |
|---|---|---|
| gatsbyjs/gatsby-plugin-mdx | < 2.14.1 | 2.14.1 |
| gatsbyjs/gatsby-plugin-mdx | ≥ 3.0.0, < 3.15.2 | 3.15.2 |