Hazelcast vulnerabilities
Published CVEs affecting Hazelcast products: 2 record(s), with severity, exploitation and fixes.
CVE-2026-107726
Critical · 9.3
CWE-20 Oct 8, 2026
Hazelcast: Arbitrary member memory access by low-privileged client
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.
CVE-2026-107725
High · 8.7
CWE-862 Oct 8, 2026
Hazelcast: Authorization bypass in IMap Predicates API
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, missing authorization checks in the IMap Predicates API allow a malicious client with limited privileges to execute arbitrary code on a Hazelcast cluster member. This issue is fixed in versions 5.4.5, 5.5.10, 5.6.1, and 5.7.0.