CVE-2023-45859
Missing permission checks on Hazelcast client protocol
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2023-45859- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-922
- Updated
- 2026-11-02
EUVDEUVD-2024-0767
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.
- Record
EUVD-2024-0767- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xh6m-7cr7-xx66
Missing permission checks on Hazelcast client protocol
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.
- Record
GHSA-xh6m-7cr7-xx66- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-281, CWE-922
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-45859- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-922
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2023-45859- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Updated
- 2026-11-02
OSVGHSA-xh6m-7cr7-xx66
Missing permission checks on Hazelcast client protocol
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.
- Record
GHSA-xh6m-7cr7-xx66- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-281, CWE-922
- Updated
- 2026-11-02
OSVCLSA-2026-1769990937 No score
TuxCare security update for com.hazelcast (3 CVEs)
TuxCare rebuilt 2 com.hazelcast packages to address 3 CVEs. Fixed in 4.2.8-tuxcare.1.
- Record
CLSA-2026-1769990937- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.hazelcast:hazelcastMaven |
through 4.1.10 | None known |
com.hazelcast:hazelcastMaven |
4.2 to 4.2.8 | None known |
com.hazelcast:hazelcastMaven |
5.0 to 5.0.5 | None known |
com.hazelcast:hazelcastMaven |
5.1 to 5.1.7 | None known |
com.hazelcast:hazelcastMaven |
5.2.0 to 5.2.4 | 5.2.5 |
com.hazelcast:hazelcastMaven |
5.3.0 up to 5.3.5 | 5.3.5 |
com.hazelcast:hazelcast-allMaven |
through 4.1.10 | None known |
com.hazelcast:hazelcast-allMaven |
4.2 to 4.2.8 | None known |
com.hazelcast:hazelcastTuxCare:Maven From an advisory covering 3 CVEs |
4.2.8 up to 4.2.8-tuxcare.1 | 4.2.8-tuxcare.1 |
com.hazelcast:hazelcast-allTuxCare:Maven From an advisory covering 3 CVEs |
4.2.8 up to 4.2.8-tuxcare.1 | 4.2.8-tuxcare.1 |
Show 8 moreShow less
| Package | Affected | Fixed |
|---|---|---|
com.hazelcast:hazelcastMaven |
through 4.1.10, plus listed versions 1.51.5.11.5.21.5.31.6 Show 45 moreShow less1.6-RC11.71.7-RC11.7-RC21.7-RC31.7-RC41.7.11.81.8.11.8.21.8.31.8.41.8.51.91.9.11.9.1-RC21.9.21.9.2.11.9.2.21.9.2.31.9.31.9.3-RC1.9.3.11.9.3.21.9.3.31.9.3.41.9.41.9.4-RC1.9.4-RC11.9.4.11.9.4.21.9.4.31.9.4.41.9.4.51.9.4.61.9.4.82.02.0-RC12.0-RC22.0.12.0.22.0.32.0.42.12.1.1 |
None known |
com.hazelcast:hazelcastMaven |
4.2 to 4.2.8, plus listed versions 4.2.14.2.24.2.34.2.44.2.54.2.64.2.7 |
None known |
com.hazelcast:hazelcastMaven |
5.0 to 5.0.5, plus listed versions 5.0.15.0.25.0.35.0.4 |
None known |
com.hazelcast:hazelcastMaven |
5.1 to 5.1.7, plus listed versions 5.1.15.1.25.1.35.1.45.1.55.1.6 |
None known |
com.hazelcast:hazelcastMaven |
5.2.0 up to 5.2.5, plus listed versions 5.2.15.2.25.2.35.2.4 |
5.2.5 |
com.hazelcast:hazelcastMaven |
5.3.0 up to 5.3.5, plus listed versions 5.3.15.3.25.3.4 |
5.3.5 |
com.hazelcast:hazelcast-allMaven |
through 4.1.10, plus listed versions 1.8.41.8.51.91.9.11.9.1-RC2 Show 45 moreShow less1.9.21.9.2.11.9.2.21.9.2.31.9.31.9.3-RC1.9.3.11.9.3.21.9.3.31.9.3.41.9.41.9.4-RC1.9.4-RC11.9.4.11.9.4.21.9.4.31.9.4.41.9.4.51.9.4.61.9.4.82.02.0-RC12.0-RC22.0.12.0.22.0.32.0.42.12.1.12.1.22.1.32.22.32.3.12.42.4.12.52.5.12.62.6.12.6.102.6.22.6.32.6.42.6.5 |
None known |
com.hazelcast:hazelcast-allMaven |
4.2 to 4.2.8, plus listed versions 4.2.14.2.24.2.34.2.44.2.54.2.64.2.7 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-45859 is a high vulnerability (CVSS 7.6) in Hazelcast, published February 27, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. Fixed in com.hazelcast:hazelcast 5.2.5.
References
Left out here: 324 versions. The JSON record has them.