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CVE-2023-45859

22
FAUCET Score

CVE-2023-45859 is a high-severity vulnerability affecting Hazelcast versions through 4.1.10, 4.2.8, 5.0.5, 5.1.7, 5.2.4, and 5.3.2, where improper permission checks allow authenticated users to access unauthorized data. With a CVSS score of 7.6, this vulnerability has a low attack complexity and requires network access and authentication, but can lead to high confidentiality impact and moderate integrity and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.10CPE matchmatch criteria
cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
>= 4.2.0, <= 4.2.8CPE matchmatch criteria
cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
>= 5.0.0, <= 5.0.5CPE matchmatch criteria
cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
>= 5.1.0, <= 5.1.7CPE matchmatch criteria
cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*
>= 5.2.0, < 5.2.5CPE matchmatch criteria
cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 29th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: com.hazelcast:hazelcastFixed in: 5.2.5
mavenpatch availablevia ghsa
Product: com.hazelcast:hazelcastFixed in: 5.3.5

Vendor Advisories (1)

mavenGHSA-xh6m-7cr7-xx66high

Missing permission checks on Hazelcast client protocol

Feb 27, 2024

References

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