CVE-2026-75935: CWE-789 Memory allocation with excessive size value in Amazon Ion Amazon Ion Java
CVE-2026-75935 is a high-severity vulnerability in the Amazon Ion Java library, affecting versions prior to 1.12.0. It involves memory allocation with an excessive size value, leading to a denial of service condition through memory amplification. This vulnerability allows an attacker to cause a denial of service by triggering large memory preallocation based on declared lengths in data processing.
AI Analysis
Technical Summary
The vulnerability CVE-2026-75935 in Amazon Ion Java (versions before 1.12.0) is classified as CWE-789, involving memory allocation with an excessive size value. Specifically, it allows memory-amplification denial of service via declared-length preallocation. This means that when processing Amazon Ion data, the library may allocate more memory than necessary based on maliciously crafted input, potentially exhausting system resources and causing a denial of service. The CVSS v3.1 score is 7.5 (high), indicating network attack vector with no privileges or user interaction required and impact limited to availability.
Potential Impact
Successful exploitation of this vulnerability results in a denial of service condition by consuming excessive memory resources. There is no impact on confidentiality or integrity. The denial of service can disrupt applications using the affected Amazon Ion Java library versions, potentially causing service outages or degraded performance.
Mitigation Recommendations
A fix is available in Amazon Ion Java version 1.12.0 and later. Users should upgrade to version 1.12.0 or newer to remediate this vulnerability. Refer to the AWS Security Bulletin (https://aws.amazon.com/security/security-bulletins/2026-083-aws/) for the most current remediation information.
CVE-2026-75935: CWE-789 Memory allocation with excessive size value in Amazon Ion Amazon Ion Java
Description
CVE-2026-75935 is a high-severity vulnerability in the Amazon Ion Java library, affecting versions prior to 1.12.0. It involves memory allocation with an excessive size value, leading to a denial of service condition through memory amplification. This vulnerability allows an attacker to cause a denial of service by triggering large memory preallocation based on declared lengths in data processing.
CVSS v3.1
Score 7.5high
Affected software
Amazon Ion
Amazon Ion Java
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
The vulnerability CVE-2026-75935 in Amazon Ion Java (versions before 1.12.0) is classified as CWE-789, involving memory allocation with an excessive size value. Specifically, it allows memory-amplification denial of service via declared-length preallocation. This means that when processing Amazon Ion data, the library may allocate more memory than necessary based on maliciously crafted input, potentially exhausting system resources and causing a denial of service. The CVSS v3.1 score is 7.5 (high), indicating network attack vector with no privileges or user interaction required and impact limited to availability.
Potential Impact
Successful exploitation of this vulnerability results in a denial of service condition by consuming excessive memory resources. There is no impact on confidentiality or integrity. The denial of service can disrupt applications using the affected Amazon Ion Java library versions, potentially causing service outages or degraded performance.
Mitigation Recommendations
A fix is available in Amazon Ion Java version 1.12.0 and later. Users should upgrade to version 1.12.0 or newer to remediate this vulnerability. Refer to the AWS Security Bulletin (https://aws.amazon.com/security/security-bulletins/2026-083-aws/) for the most current remediation information.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-08-18T15:50:50.728Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-083-aws/","vendor":"AWS"}]
Threat ID: 6a84b773c6e8be0332ab79ce
Added to database: 08/18/2026, 19:50:11 UTC
Last enriched: 09/11/2026, 21:02:34 UTC
Last updated: 10/02/2026, 07:03:07 UTC
Views: 85
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