CVE-2026-107726
Hazelcast: Arbitrary member memory access by low-privileged client
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | hazelcast |
| Product | hazelcast |
| Published | Oct 8, 2026 |
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Affected Versions
hazelcast / hazelcast
< 5.4.5 >= 5.5.0, < 5.5.10 >= 5.6.0, < 5.6.1
References
github.com: https://github.com/hazelcast/hazelcast/security/advisories/GHSA-6v25-8wq6-xq4j github.com: https://github.com/hazelcast/hazelcast/commit/361979da12f18950c24719db832ca6c5e7c0534f docs.hazelcast.com: https://docs.hazelcast.com/hazelcast/5.7/release-notes/community docs.hazelcast.com: https://docs.hazelcast.com/hazelcast/5.7/release-notes/enterprise github.com: https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0