Impact In Hazelcast through 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2, some client operations don't check permissions properly, allowing authenticated users to access data stored in the cluster.

Patches Fix versions: 5.2.5, 5.3.5, 5.4.0-BETA-1

Workarounds There is no known workaround.

Impact In Hazelcast Platform through 5.3.4, a security issue exists within the SQL mapping for the CSV File Source connector. This issue arises from inadequate permission checking, which could enable unauthorized clients to access data from files stored on a member's filesystem.

Patches Fix versions: 5.3.5, 5.4.0-BETA-1

Workaround Disabling Hazelcast Jet processing engine in Hazelcast member configuration workarounds the issue. As a result SQL and Jet jobs won't work.

A flaw was found in Hazelcast and Hazelcast Jet. This flaw may allow an attacker unauthenticated access to manipulate data in the cluster.

Improper Restriction of XML External Entity Reference in GitHub repository hazelcast/hazelcast in 5.1-BETA-1.

The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3, and Jet Enterprise 4.x through 4.2, doesn't verify properly the password in some system-user-dn scenarios. As a result, users (clients/members) can be authenticated even if they provide invalid passwords.

In Hazelcast before 3.11, the cluster join procedure is vulnerable to remote code execution via Java deserialization.

Upstream issue:

https://github.com/hazelcast/hazelcast/issues/8024

Upstream pull:

https://github.com/hazelcast/hazelcast/pull/12230

A flaw was found in the cluster join procedure in Hazelcast. This flaw allows an attacker to gain remote code execution via Java deserialization.