early signals AWS security bulletins infra

CVE-2026-111497: Native Brotli Decoder Remote Code Execution and Memory Disclosure

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AWS is addressing CVE-2026-111497, a native Brotli decoder flaw allowing remote code execution or memory disclosure in services like AWS Lambda and AWS App Runner.

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Bulletin ID: 2026-155-AWS Publication Date: 10/28/2026 15:00 PM PDT Description: AWS is aware of CVE-2026-111497, an issue in the native Brotli decompression library that could allow a third party to run code or read process memory in an affected application. AWS Lambda, AWS Amplify, AWS App Runner, Amazon CloudWatch Synthetics, AWS CodeBuild, AWS Elastic Beanstalk, and AWS Elemental MediaLive are addressing this issue. Some services require customer action. For details, see the bulletin. Read t