What is CVE-2023-45859?

CVE-2023-45859 is a high-severity vulnerability in Hazelcast, classified under CWE-922. CVSS score: 7.6/10. Published 2024-02-28.

How severe is CVE-2023-45859?

High severity. CVSS v3 base score is 7.6 out of 10.

Is CVE-2023-45859 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Hazelcast

CVE-2023-45859

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.

Published 2024-02-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (41.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Hazelcast

Weakness classification (CWE)

CWE-922

Public proof-of-concept exploits

Farrhouq/Inpt-report

References

github.com/hazelcast/hazelcast/pull/25509 (Patch)
github.com/hazelcast/hazelcast/security/advisories/GHSA-xh6m-7cr7-xx66 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-45859?: CVE-2023-45859 is a high-severity vulnerability in Hazelcast, classified under CWE-922. CVSS score: 7.6/10. Published 2024-02-28.
How severe is CVE-2023-45859?: High severity. CVSS v3 base score is 7.6 out of 10.
Is CVE-2023-45859 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.