CVE-2023-33265: Hazelcast

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

In Hazelcast through 5.0.4, 5.1 through 5.1.6, and 5.2 through 5.2.3, executor services don't check client permissions properly, allowing authenticated users to execute tasks on members without the required permissions granted.

Affected products

• Hazelcast Hazelcast: from 5.0.0, before 5.0.5 (fixed in 5.0.5); from 5.1.0, before 5.1.7 (fixed in 5.1.7); from 5.2.0, before 5.2.4 (fixed in 5.2.4)
• Hazelcast Imdg: up to and including 4.2.8

Published 2023-07-18. Last modified 2026-06-17.