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High

Hazelcast Executor Services don't check client permissions properly

  • Disclosed: 19.07.2023
  • Updated: 11.10.2026 11:21

Impact

In Hazelcast Platform, 5.0 through 5.0.4, 5.1 through 5.1.6, and 5.2 through 5.2.3, and Hazelcast IMDG (all versions up to 4.2.z), Executor Services don't check client permissions properly, allowing authenticated users to execute tasks on members without the required permissions granted.

Patches

Fix versions: 5.3.0, 5.2.4, 5.1.7, 5.0.5

Workarounds

Users are only affected when they already use executor services (i.e., an instance exists as a distributed data structure).

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) com.hazelcast:hazelcast >= 5.2.0, < 5.2.4, >= 5.1.0, < 5.1.7, < 5.0.5 5.2.4, 5.1.7, 5.0.5
Java / Kotlin (Maven) com.hazelcast:hazelcast-enterprise >= 5.2.0, < 5.2.4, >= 5.1.0, < 5.1.7, < 5.0.5 5.2.4, 5.1.7, 5.0.5

References

CVSS score 7.6/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
Weakness (CWE)
CWE-862
Platform
Java / Kotlin (Maven)
Package
com.hazelcast:hazelcast, com.hazelcast:hazelcast-enterprise
Disclosed
19.07.2023
Updated
11.10.2026 11:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-c5vj-wp4v-mmvx - CC BY 4.0

Vulnerability history: com.hazelcast:hazelcast

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (10) in the archive
Total entries
10
First → latest
01.2022 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 4
  • High 5
  • Medium 1

Disclosures per year

Severity:
  1. Hazelcast allows arbitrary member memory access by low-privileged client
    Critical CVE-2026-107726 >= 5.6.0, < 5.7.0, >= 5.5.0, < 5.7.0, < 5.7.0 5.7.0
  2. Hazelcast has an authorization bypass in IMap Predicates API
    High CVE-2026-107725 >= 5.6.0, < 5.7.0, >= 5.5.0, < 5.7.0, < 5.7.0 5.7.0
  3. Missing permission checks on Hazelcast client protocol
    High · 7.6 CVE-2023-45859 <= 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
  4. Hazelcast Platform permission checking in CSV File Source connector
    High · 6.5 CVE-2023-45860 >= 5.3.0, < 5.3.5, >= 5.2.0, < 5.2.5, <= 5.1.7 5.3.5, 5.2.5
  5. Hazelcast Executor Services don't check client permissions properly this entry
    High · 7.6 CVE-2023-33265 >= 5.2.0, < 5.2.4, >= 5.1.0, < 5.1.7, < 5.0.5 5.2.4, 5.1.7, 5.0.5
  6. Hazelcast connection caching
    Critical · 9.1 CVE-2022-36437 < 3.12.13, >= 4.0, <= 4.0.6, >= 4.1, < 4.1.10, >= 4.2, < 4.2.6, >= 5.0, < 5.0.4, >= 5.1, < 5.1.3 3.12.13, 4.1.10, 4.2.6, 5.0.4, 5.1.3
  7. Deserialization of Untrusted Data in Hazelcast
    High · 8.1 CVE-2016-10750 < 3.11 3.11
  8. XML External Entity Reference in Hazelcast
    Critical · 9.8 CVE-2022-0265 >= 5.1-beta1, < 5.1 5.1
  9. Security Advisory for "Log4Shell"
    Critical · 10.0 ghsa-v57x-gxfj-484q >= 5.0, < 5.0.2, >= 4.0.0, < 4.0.5, >= 4.1.1, < 4.1.8, >= 4.2, < 4.2.4 5.0.2, 4.0.5, 4.1.8, 4.2.4

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