CVE-2026-75935
Memory-amplification denial of service via declared-length preallocation in Amazon ion-java
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-789 |
| Vendor | amazon ion |
| Product | amazon ion java |
| Published | Aug 18, 2026 |
| Last Updated | Aug 18, 2026 |
Stay Ahead of the Next One
Get instant alerts for amazon ion amazon ion java
Be the first to know when new high vulnerabilities affecting amazon ion amazon ion java are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Amazon Ion / Amazon Ion Java
1.9.0 < 1.12.0