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 update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-45859 is rated Moderate Risk (44.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.50%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-45859

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.20% 0.50% +0.30%
2 2025-11-21 0.40% 0.20% -0.20%
3 2025-11-18 — 0.40% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-45859

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 4.7 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-45859

GitHub Security Advisory for CVE-2023-45859

GHSA-xh6m-7cr7-xx66 · Severity: high · Ecosystem: maven — Missing permission checks on Hazelcast client protocol

Affected software / configurations for CVE-2023-45859

Vendor Product Version Raw CPE
hazelcast hazelcast <= 4.1.10 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
hazelcast hazelcast >= 4.2.0, <= 4.2.8 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
hazelcast hazelcast >= 5.0.0, <= 5.0.5 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
hazelcast hazelcast >= 5.1.0, <= 5.1.7 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
hazelcast hazelcast >= 5.2.0, < 5.2.5 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
hazelcast hazelcast >= 5.3.0, < 5.3.5 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*

References for CVE-2023-45859

cvelogic Threat Intelligence