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TI-2026-53161 Aliases CVE-2026-75936

Memory-amplification denial of service via GZIP decompression bomb in Amazon ion-java

Priority MEDIUM 45CWE-409Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Fix Fixed Amazon Ion Java (Amazon Ion): 1.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Amazon IonAmazon Ion Javabefore 1.12.01.12.0Patch availableCNA
  • Amazon Ion Java VendorAmazon Ion Affected before 1.12.0 Fixed in 1.12.0 Patch available CNA

Remediation

  • Fix · CNA Amazon Ion Java (Amazon Ion) Fixed in 1.12.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Amazon Ion Java — aws.amazon.com/security/security-bulletins/2026-083-aws

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-53160 Memory-amplification denial of service via declared-length preallocation in Amazon ion-javaPriority MEDIUM 45
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-75936

References

Patch 1

Advisory 2

  • TI-2026-53160 Memory-amplification denial of service via declared-length preallocation in Amazon ion-java CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences