Node.js 26 security release: builds before 26.12.1 are exposed

high severity · published 2026-10-21

Node.js 26.12.1 is a security release, and older builds on the 26 line stay exposed to the flaws it fixes until they are updated.

Fixed in: 26.12.1

Source: nodejs.org

Am I affected?

You are affected if the installed version is older than 26.12.1. Check the version you have and update to 26.12.1 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 1588 and your operating system.