CVE-2026-107726
Severity not reportedHazelcast is a unified real-time data platform combining stream processing with a fast data store.
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://docs.hazelcast.com/hazelcast/5.7/release-notes/community security-advisories@github.com
- https://docs.hazelcast.com/hazelcast/5.7/release-notes/enterprise security-advisories@github.com
- https://github.com/hazelcast/hazelcast/commit/361979da12f18950c24719db832ca6c5e7c0534f security-advisories@github.com
- https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0 security-advisories@github.com
- https://github.com/hazelcast/hazelcast/security/advisories/GHSA-6v25-8wq6-xq4j security-advisories@github.com