Node2Shell: Brotli Decoder RCE in Node.js (CVE-2026-111497)
Updated:
Executive Summary
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Analysis
Originally published by r/cybersecurity on Oct 26, 2026.
Related Threats
I recreated a Node2Shell (CVE-2026-111497) RCE attack in the form of an interactive exercise
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Can’t Patch Node.js Yet? Build a Stopgap with the Controls You Own
Executive Summary Node.js has fixed CVE-2026-111497, a Brotli decoder flaw that can permit remote code execution, in 22.23.4, 24.22.1, and 26.12.1, but upgrading at scale is slow. In Qualys telemetry, only 42,000 of roughly 3 million Node.js installations have been patched, and 1.7 million run end-of-life lines that will never receive a fix. In the […]
Waiting on a Node.js Upgrade? Build a Stopgap with the Controls You Own
Executive Summary Node.js has fixed CVE-2026-111497, a Brotli decoder flaw that can permit remote code execution, in 22.23.4, 24.22.1, and 26.12.1, but upgrading at scale is slow. In Qualys telemetry, only 42,000 of roughly 3 million Node.js installations have been patched, and 1.7 million run end-of-life lines that will never receive a fix. In the […]