High

Node.js Brotli Decoder Bug Could Allow Remote Code Execution in All Supported Versions

The Hacker News

October 22, 2026 at 7:47 AM

Overview

On October 21, Node.js rolled out security updates across its three supported release lines: 22.x, 24.x, and 26.x. The updates addressed a total of 10 vulnerabilities, with the most severe being a flaw in the Brotli decompression code included in Node.js. This vulnerability poses a significant risk because it could allow remote code execution, enabling attackers to run arbitrary code on affected systems. Users of Node.js should promptly update to the fixed versions to protect their applications from potential exploitation. It's crucial for developers and organizations utilizing Node.js to stay vigilant and ensure their systems are up to date to mitigate these risks.

Key Takeaways

Affected Systems: Node.js versions 22.x, 24.x, 26.x
Action Required: Update to the fixed versions of Node.
Timeline: Disclosed on October 21, 2023

Original Article Summary

Node.js released security updates on October 21 for its three supported release lines, 22.x, 24.x and 26.x, fixing 10 flaws. The most serious is a bug in the Brotli decompression code that Node.js bundles, which the project says can allow remote code execution, meaning an attacker could run code of their choosing on the affected system. Each supported line has one fixed version:

Impact

Node.js versions 22.x, 24.x, 26.x

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Disclosed on October 21, 2023

Remediation

Update to the fixed versions of Node.js for 22.x, 24.x, and 26.x as released on October 21, 2023.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Vulnerability, Update.

Read Original Article

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