CVE-2026-75935: CWE-789 Memory allocation with excessive size value in Amazon Ion Amazon Ion Java
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-75935) affects Amazon Ion Java versions before 1.12.0. It arises from uncontrolled memory allocation in the binary Ion stream cursor component. A remote attacker can craft an Ion binary document with a declared-length field that triggers excessive heap preallocation, leading to denial of service. The CVSS v3.1 score is 7.5 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. The vendor recommends upgrading to version 1.12.0 to remediate the issue.
Potential Impact
An attacker can cause a denial of service by forcing the affected application to allocate excessive memory, potentially exhausting system resources and disrupting service availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade Amazon Ion Java to version 1.12.0 or later to remediate this vulnerability. No other mitigation or temporary workaround is indicated.
CVE-2026-75935: CWE-789 Memory allocation with excessive size value in Amazon Ion Amazon Ion Java
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.
CVSS v3.1
Score 7.5high
Affected software
pkg:maven/com.amazon.ion/ion-javaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-75935) affects Amazon Ion Java versions before 1.12.0. It arises from uncontrolled memory allocation in the binary Ion stream cursor component. A remote attacker can craft an Ion binary document with a declared-length field that triggers excessive heap preallocation, leading to denial of service. The CVSS v3.1 score is 7.5 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. The vendor recommends upgrading to version 1.12.0 to remediate the issue.
Potential Impact
An attacker can cause a denial of service by forcing the affected application to allocate excessive memory, potentially exhausting system resources and disrupting service availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade Amazon Ion Java to version 1.12.0 or later to remediate this vulnerability. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-08-18T15:50:50.728Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a84b773c6e8be0332ab79ce
Added to database: 08/18/2026, 19:50:11 UTC
Last enriched: 08/18/2026, 20:04:25 UTC
Last updated: 08/19/2026, 02:51:18 UTC
Views: 8
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