CVE-2026-107726

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.

CVSS

No CVSS.

References

Link	Resource
https://docs.hazelcast.com/hazelcast/5.7/release-notes/community
https://docs.hazelcast.com/hazelcast/5.7/release-notes/enterprise
https://github.com/hazelcast/hazelcast/commit/361979da12f18950c24719db832ca6c5e7c0534f
https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0
https://github.com/hazelcast/hazelcast/security/advisories/GHSA-6v25-8wq6-xq4j

Configurations

No configuration.

History

08 Oct 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 22:17

Updated : 2026-10-09 16:35

NVD link : CVE-2026-107726

Mitre link : CVE-2026-107726

CVE.ORG link : CVE-2026-107726

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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