Improper handling of highly compressed data in Amazon ion-java before 1.12.1 might allow remote attackers to cause a denial of service via a crafted compressed Ion document that expands to an arbitrarily large size upon decompression due to insufficient coverage of the GZIP auto-decompression opt-out introduced for CVE-2026-75936.



To remediate this issue, users should upgrade to version 1.12.1.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 04 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Description Improper handling of highly compressed data in Amazon ion-java before 1.12.1 might allow remote attackers to cause a denial of service via a crafted compressed Ion document that expands to an arbitrarily large size upon decompression due to insufficient coverage of the GZIP auto-decompression opt-out introduced for CVE-2026-75936. To remediate this issue, users should upgrade to version 1.12.1.
Title Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-java
First Time appeared Amazon
Amazon ion-java
Weaknesses CWE-409
CPEs cpe:2.3:a:amazon:ion-java:*:*:*:*:*:*:*:*
Vendors & Products Amazon
Amazon ion-java
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-09-04T19:27:28.963Z

Reserved: 2026-09-04T16:58:12.405Z

Link: CVE-2026-85786

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T20:17:33.153

Modified: 2026-09-04T20:17:33.153

Link: CVE-2026-85786

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T20:45:17Z

Weaknesses