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Critical

Hazelcast connection caching

  • Disclosed: 27.12.2022
  • Updated: 11.10.2026 12:22

Impact

The Connection handler in Hazelcast and Hazelcast Jet allows an unauthenticated, remote attacker to access and manipulate data in the cluster with another authenticated connection's identity. The affected Hazelcast versions are through 3.12.12, 4.0.6, 4.1.9, 4.2.5, 5.0.3, and 5.1.2. The affected Hazelcast Jet versions are through 4.5.3.

Patches

Hazelcast Jet (and Enterprise) 4.5.4. Hazelcast IMDG (and Enterprise)3.12.13 Hazelcast IMDG (and Enterprise) 4.1.10 Hazelcast IMDG (and Enterprise) 4.2.6 Hazelcast Platform (and Enterprise) 5.1.3

Workarounds

There is no known workaround, but setups with TLS and mutual authentication enabled significantly lowers the exploitation risk.

References

https://support.hazelcast.com/s/article/Security-Advisory-for-CVE-2022-36437

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) com.hazelcast:hazelcast < 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
Java / Kotlin (Maven) com.hazelcast:hazelcast-enterprise < 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
Java / Kotlin (Maven) com.hazelcast.jet:hazelcast-jet < 4.5.4 4.5.4
Java / Kotlin (Maven) com.hazelcast.jet:hazelcast-jet-enterprise < 4.5.4 4.5.4

References

CVSS score 9.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
CWE-384
Platform
Java / Kotlin (Maven)
Package
com.hazelcast:hazelcast, com.hazelcast:hazelcast-enterprise, com.hazelcast.jet:hazelcast-jet
Disclosed
27.12.2022
Updated
11.10.2026 12:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-c5hg-mr8r-f6jp - 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 this entry
    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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