CVE-2026-0969: next-mdx-remote affected by arbitrary code execution in React server-side rendering of untrusted MDX content
(updated )
The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content.
References
- discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155
- github.com/advisories/GHSA-g4xw-jxrg-5f6m
- github.com/hashicorp/next-mdx-remote
- github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3
- github.com/hashicorp/next-mdx-remote/releases/tag/v6.0.0
- nvd.nist.gov/vuln/detail/CVE-2026-0969
Code Behaviors & Features
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