CVE-2026-75935
Received Received - Intake

Memory Allocation DoS in Amazon Ion Java

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: AMZN

Description
Uncontrolled memory allocation in the binary Ion stream cursor in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted Ion binary document containing a declared-length field that causes excessive heap preallocation. To remediate this issue, users should upgrade to version 1.12.0.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-19
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-75935
EUVD
EUVD-2026-61173

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
amazon ion-java 1.12.0
amazon ion-java From 1.9.0 (inc) to 1.12.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-789 The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

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Executive Summary

This vulnerability involves uncontrolled memory allocation in the Amazon ion-java library before version 1.12.0. A remote attacker could exploit it by sending a specially crafted Ion binary document with a declared-length field, causing excessive heap preallocation and potentially leading to a denial of service.

Impact Analysis

The vulnerability could allow attackers to crash applications or services using affected versions of Amazon ion-java by consuming excessive memory, disrupting normal operations and causing downtime.

Mitigation Strategies

Upgrade the Amazon ion-java library to version 1.12.0 or later to address the uncontrolled memory allocation issue.

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