Skip to content
Fencer Vulns
high 7.6

CVE-2023-45859 json

Missing permission checks on Hazelcast client protocol

published 2024-02-27 2 y ago modified 2026-07-08 4 mo ago also GHSA-xh6m-7cr7-xx66 , EUVD-2024-0767

cvss
7.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven com.hazelcast:hazelcast 5.2.5, 5.3.5
  • hazelcast hazelcast 5.2.5, 5.3.5

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
CNA 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
GitHub 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Affected packages

ecosystem package affected fixed in
maven com.hazelcast:hazelcast
<=4.1.10
>=4.2, <=4.2.8
>=5.0, <=5.0.5
>=5.1, <=5.1.7
>=5.2.0, <5.2.5
>=5.3.0, <5.3.5
5.2.5
5.3.5
maven com.hazelcast:hazelcast-all
<=4.1.10
>=4.2, <=4.2.8
 no fix listed

Classification

Weakness
  • CWE-922 Insecure Storage of Sensitive Information
  • CWE-281 Improper Preservation of Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.