Brotli Decoder Flaw Behind Node.js RCE Also Affects Bun, Python and Other Widely Used Software
CVE-2026-111497 in Google's Brotli decoder enables RCE across Node.js, Bun, Python, and Envoy—a single upstream C-library flaw with cascading impact that demands immediate dependency scanning in polyglot enterprise stacks.
Summary written by editorial AI · Source link below
A memory-corruption flaw in Google's Brotli decoder sits in many programs that unpack Brotli-compressed data, among them Bun, the Python Brotli and brotlicffi packages, and Envoy proxies set up to decompress Brotli.
Tracked as CVE-2026-111497, the flaw allows crafted compressed data to overwrite past the end of a buffer and corrupt a program's memory, potentially
Editorial Analysis
Framed for the SOC Analyst desk
Exploitation requires only delivering crafted Brotli-compressed payloads to vulnerable endpoints, making web-facing services and API gateways the primary attack surface to monitor.
Deploy IDS/WAF signatures to detect malformed Brotli-compressed payloads and alert on Brotli decompression crashes in production services.
A critical flaw in a Google compression library used across most modern web stacks enables remote code execution—patching is urgent and spans multiple technology layers.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
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