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High

Deserialization of Untrusted Data in Hazelcast

  • Disclosed: 24.05.2022
  • Updated: 11.10.2026 11:20

In Hazelcast before 3.11, the cluster join procedure is vulnerable to remote code execution via Java deserialization. If an attacker can reach a listening Hazelcast instance with a crafted JoinRequest, and vulnerable classes exist in the classpath, the attacker can run arbitrary code.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) com.hazelcast:hazelcast < 3.11 3.11

References

CVSS score 8.1/10
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-502
Platform
Java / Kotlin (Maven)
Package
com.hazelcast:hazelcast
Disclosed
24.05.2022
Updated
11.10.2026 11:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-jv65-pf7v-f7p8 - 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
    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 this entry
    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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