Last reviewed
Assess
node2shell
CVE-2026-111497
CVE-2026-111497 is a memory-corruption flaw in the shared Brotli decoder. Any service that decompresses attacker-controlled Brotli, in a request or an HTTP response, can be exposed.
Risk
The decoder is used beyond Node.js, including in server-side fetches. The October 25 review did not confirm active exploitation.
Recommended action
Update or remove vulnerable Brotli decoders using each vendor's guidance, including copies bundled with runtimes or container images.