What is 2026-100-AWS?

2026-100-AWS is a security advisory published by AWS Security Bulletins with High severity. CVE-2026-85786 - Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-java

Which CVE IDs does 2026-100-AWS cover?

2026-100-AWS covers the following CVE IDs: CVE-2026-85786, CVE-2026-75936. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

2026-100-AWSHigh

CVE-2026-85786 - Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-java

Vendor

AWS Security Bulletins

Published

September 4, 2026

Last Modified

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🔗 CVE IDs covered (2)

CVE-2026-85786 →CVE-2026-75936 →

📋 Description

Bulletin ID: 2026-100-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 09/04/2026 12:30 PM PDT Description: ion-java is a Java library that implements the Amazon Ion data format specification. We identified CVE-2026-85786, memory-amplification denial of service via highly compressed data expansion. ion-java 1.12.0 added a GZIP auto-decompression opt-out for CVE-2026-75936, but the implementation of the opt-out in 1.12.0 was insufficient to address the issue. Impacted versions:
Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

🔗 References (1)

advisoryhttps://aws.amazon.com/security/security-bulletins/rss/2026-100-aws/