CVE-2026-75936
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Amazon Ion | Amazon Ion Java | 0 < 1.12.0 | affected |
Weaknesses
- CWE-409: CWE-409 (Improper Handling of Highly Compressed Data)
References
- https://github.com/amazon-ion/ion-java/releases/tag/v1.12.0
- https://github.com/amazon-ion/ion-java/security/advisories/GHSA-wj53-jv76-65mc
- https://aws.amazon.com/security/security-bulletins/2026-083-aws/
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