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AWS Security BulletinsCVE-2026-111497

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

Severity not listed 1 CVE Published Oct 28, 2026 at 9:58 PM UTC

Summary

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.

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Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

  1. Published by AWS

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.