CVE-2026-85786 - Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-java
CVE-2026-85786
Summary
Bulletin ID: 2026-083-AWS
Scope: AWS
Content Type: Important (requires attention)
Publication Date: 08/18/2026 12:30 PM PDT
Description:
ion-java is a Java library that implements the Amazon Ion data format specification. We identified CVE-2026-75935, memory-amplification denial of service via declared-length preallocation, and CVE-2026-75936, memory-amplification denial of service via highly compressed data expansion.
Affected versions: < 1.12.0
Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
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 2
Update history
What changed in later vendor updates
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- The vendor changed the advisory's last-updated date.
- The vendor changed the advisory's last-updated date.
- The vendor changed the advisory's last-updated date.
Updates
- Added to SecurityAlert
We collected the advisory from the official source.
- Published by AWS
The publication date reported by the vendor.
- Confirmed at the source
Our collector saw this advisory during a later source check.