Tuesday, August 11, 2026
LIVEThe Unrelenting Cyber Battle: Hacking Threats and the Imperative of Robust Data Protection///Navigating the Cyber Labyrinth: Bolstering Defenses Against Evolving Hacking Threats///The Dual Front War: Battling Hacking and Bolstering Data Protection in the Digital Age///The Ever-Evolving Cyber Threat Landscape: Navigating Hacking and Fortifying Data Protection///The Unseen Battle: Fortifying Data in an Age of Relentless Hacking///The Unseen War: Hacking's Relentless Advance and the Imperative of Data Protection///The Evolving Threat Landscape: Hacking, Data Protection, and the Imperative for Proactive Security///Navigating the Digital Minefield: Bolstering Data Protection in an Era of Relentless Hacking///The Dual Fronts of Digital Defense: Combating Hacking and Fortifying Data Protection///Hacking's New Frontier: Fortifying Data Protection in the Age of Advanced Cyber Threats///The Dual Front: Navigating Hacking Threats and Fortifying Data Protection in the Digital Age///Navigating the Digital Gauntlet: The Evolving Nexus of Hacking and Data Protection///The Unrelenting Cyber Battle: Hacking Threats and the Imperative of Robust Data Protection///Navigating the Cyber Labyrinth: Bolstering Defenses Against Evolving Hacking Threats///The Dual Front War: Battling Hacking and Bolstering Data Protection in the Digital Age///The Ever-Evolving Cyber Threat Landscape: Navigating Hacking and Fortifying Data Protection///The Unseen Battle: Fortifying Data in an Age of Relentless Hacking///The Unseen War: Hacking's Relentless Advance and the Imperative of Data Protection///The Evolving Threat Landscape: Hacking, Data Protection, and the Imperative for Proactive Security///Navigating the Digital Minefield: Bolstering Data Protection in an Era of Relentless Hacking///The Dual Fronts of Digital Defense: Combating Hacking and Fortifying Data Protection///Hacking's New Frontier: Fortifying Data Protection in the Age of Advanced Cyber Threats///The Dual Front: Navigating Hacking Threats and Fortifying Data Protection in the Digital Age///Navigating the Digital Gauntlet: The Evolving Nexus of Hacking and Data Protection///
Subscribe
Cyber Security
Independent · Digital
Thehackingpost
RSSSubscribe
CybersecurityAI-assisted

Critical Vulnerability in Next-Mdx-Remote Allows Arbitrary Code Execution in React Server-Side Rendering

A security vulnerability identified as CVE-2026-0969 has been discovered in the next-mdx-remote library, impacting versions 4.3.0 through 5.0.0. This vulnerability allows for arbitrary code execution when rendering untrusted MDX content on servers. The…

TBy Thomas BlakeFeb 13, 20261 min read

A security vulnerability identified as CVE-2026-0969 has been discovered in the next-mdx-remote library, impacting versions 4.3.0 through 5.0.0. This vulnerability allows for arbitrary code execution when rendering untrusted MDX content on servers. The issue has been resolved in version 6.0.0 of the library.

Next-mdx-remote is an open-source TypeScript library frequently used in Next.js-based React applications. It enables developers to render MDX (Markdown with JSX) content dynamically from various sources, such as databases and APIs, on both server and client sides.

The vulnerability is associated with the library's serialize and compileMDX functions, which previously did not properly sanitize JavaScript expressions in untrusted MDX content. This flaw allows attackers to inject malicious code, including eval() , Function() , or require() expressions, that may be executed with server privileges during server-side rendering (SSR).

Aspect Information

CVE ID CVE-2026-0969

A security vulnerability identified as CVE-2026-0969 has been discovered in the next-mdx-remote library, impacting versions 4.3.0 through 5.0.0.
Thomas Blake · Thehackingpost

Affected Versions 4.3.0 to 5.0.0

CVSS Score Critical (estimated 9.8/10)

Impact Remote Code Execution (RCE) on SSR with untrusted MDX

Advertisement

Version 6.0.0 introduces changes that block JavaScript expressions by default (blockJS: true). If JavaScript expressions must be enabled (blockJS: false), a new option, blockDangerousJS: true , is available to filter out potentially harmful globals such as process , eval , and require .

It is strongly recommended to upgrade to next-mdx-remote 6.0.0 if handling untrusted MDX content on servers. Review code for compileMDX or serialize function calls to ensure proper sanitization. Utilizing libraries like remark-rehype can provide additional safety measures. Conduct thorough testing in a staging environment to identify any issues resulting from the updated defaults.

Based on reporting by Cyber Security News.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
Related Stories
Cybersecurity

Why Fintech Banking Platforms Are Reducing Operational Costs by 40%

Paige Monroe · Mar 26, 2026
Cybersecurity

Dogecoin Price Prediction: SHIB Burns 172M Tokens as Pepeto Exchange Earns From Every Trade

Eric Wallace · Mar 26, 2026
Cybersecurity

Solana Price Prediction: SOL Holds $86 With Commodity Status as Pepeto Targets Bigger Returns

Zachary Burns · Mar 26, 2026
Cybersecurity

Open Directory Malware Campaign Uses Obfuscated VBS, PNG Loaders and RAT Payloads

Joseph Cain · Mar 26, 2026