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CVE-2026-0969 — Vulnerability in next-mdx-remote — CVE Details

HIGH

next-mdx-remote affected by arbitrary code execution in React server-side rendering of untrusted MDX content

Published February 12, 2026Updated February 24, 2026Source: osv

Summary

The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content.

Advisory Timeline

  • First published February 12, 2026 (242 days ago).
  • Last revised February 24, 2026 — 13 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update next-mdx-remote to 6.0.0 or later
npm install next-mdx-remote@6.0.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: npm (1).

PackageEcosystemAffectedFixed In
next-mdx-remote
npm
All versions6.0.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2026-0969?
next-mdx-remote affected by arbitrary code execution in React server-side rendering of untrusted MDX content This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.8/10).
How do I check if my project is affected by CVE-2026-0969?
CVE-2026-0969 affects next-mdx-remote. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-0969 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.8

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-g4xw-jxrg-5f6m

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