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CVE-2026-107726 Details

Description

Hazelcast is a unified real-time data platform combining stream processing with a fast data store. Prior to 5.4.5, 5.5.10, and 5.6.1, improper validation of data supplied by a malicious client able to connect to a cluster allows arbitrary reads from a cluster member's Java heap, off-heap data, and JVM process address space. The same flaw can crash cluster members and, in some Hazelcast Enterprise Edition configurations, corrupt memory with possible arbitrary code execution. Both slim and full distributions are affected. This issue is fixed in versions 5.4.5, 5.5.10, 5.6.1, and 5.7.0.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://docs.hazelcast.com/hazelcast/5.7/release-notes/community	[email protected]
https://docs.hazelcast.com/hazelcast/5.7/release-notes/enterprise	[email protected]
https://github.com/hazelcast/hazelcast/commit/361979da12f18950c24719db832ca6c5e7c0534f	[email protected]
https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0	[email protected]
https://github.com/hazelcast/hazelcast/security/advisories/GHSA-6v25-8wq6-xq4j	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 9, 2026	CVE Modified	CISA-ADP
Oct 8, 2026	New CVE Received	[email protected]