High severity8.8NVD Advisory· Published Feb 12, 2026· Updated Apr 15, 2026
CVE-2026-0969
CVE-2026-0969
Description
The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content. This vulnerability, CVE-2026-0969, is fixed in next-mdx-remote 6.0.0.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
next-mdx-remotenpm | >= 4.3.0, < 6.0.0 | 6.0.0 |
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-g4xw-jxrg-5f6mghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-0969ghsaADVISORY
- discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155nvdWEB
- github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3ghsaWEB
- github.com/hashicorp/next-mdx-remote/releases/tag/v6.0.0ghsaWEB
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