Critical

Node.js Fixes 16 Flaws, Including HTTP/2 Bugs That Crash Servers and Leak Other Connections' Data

The Hacker News

November 12, 2026 at 8:20 AM

Overview

Node.js has patched 16 vulnerabilities, including critical flaws in its HTTP/2 support that could allow unauthenticated users to crash servers running versions 24.x and 26.x. One vulnerability could lead to a denial-of-service attack, while another could expose sensitive data by sending memory contents from the server to clients, potentially revealing information meant for other connections. The fixed versions are 22.23.5, 24.22.3, and 26.13.1. It’s crucial for developers and organizations using Node.js to update their systems to these latest versions to protect against these issues and ensure server stability and data security.

Key Takeaways

Affected Systems: Node.js versions 22.x, 24.x, and 26.x
Action Required: Update to Node.
Timeline: Newly disclosed

Original Article Summary

A flaw fixed in Node.js this week lets unauthenticated clients crash servers that use the runtime's built-in HTTP/2 support on the 24.x and 26.x release lines. A second HTTP/2 flaw can cause a server to send a client pieces of its memory, including responses intended for other connections. Fixed versions were released for all three supported lines: 22.23.5, 24.22.3, and 26.13.1. The crash

Impact

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

Exploitation Status

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

Timeline

Newly disclosed

Remediation

Update to Node.js versions 22.23.5, 24.22.3, or 26.13.1

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, Critical.

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