AmazonCVE-2026-75936
Amazon Ion Java: denial of service
High8.7CVE-2026-75936 · Published Aug 18, 2026 · updated Aug 20, 2026
Improper handling of highly compressed data in the GZIP auto-decompression handler in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted compressed Ion document that expands to an arbitrarily large size upon decompression. To remediate this issue, users should upgrade to version 1.12.0 and configure withGzipDecompressionEnabled(false) and/or set an explicit withMaximumBufferSize() when parsing untrusted input.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Amazon Ion Java Product | < 1.12.0 | 1.12.0 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-409
More Amazon advisories
All Amazon| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 24 | Amazon Kiro IDE: untrusted functionality included High8.6Sep 24 | High8.6 | 1.0.242 |
| Aug 4 | Amazon Kiro CLI: remote code executionHigh8.5Aug 4 | High8.5 | 2.10.0 |