CVE-2026-75936 HIGH

CVE-2026-75936: Memory-amplification denial of service via GZIP decompression bomb in Amazon ion-java

Vendor Amazon Ion
Product Amazon Ion Java
Weakness CWE-409
Published August 18, 2026
Last update August 18, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 18, 2026 CVE published
August 18, 2026 Record updated