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High

Hazelcast has an authorization bypass in IMap Predicates API

  • Disclosed: 08.10.2026
  • Updated: 11.10.2026 13:20

Impact

Missing authorization checks in the Predicates API may allow a malicious client to execute arbitrary code on a Hazelcast member.

Patches

Enterprise customers should upgrade to a fixed version of Hazelcast Enterprise Edition:

  • 5.7.0
  • 5.6.1
  • 5.5.10
  • 5.4.5

Customers with extended support contracts should contact Hazelcast Support for information on patches for older versions.

Community Edition users should upgrade to version 5.7.0.

Workarounds

None - customers are advised to upgrade to a fixed version as soon as possible.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) com.hazelcast:hazelcast >= 5.6.0, < 5.7.0, >= 5.5.0, < 5.7.0, < 5.7.0 5.7.0

References

CVSS score -
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE)
CWE-862
Platform
Java / Kotlin (Maven)
Package
com.hazelcast:hazelcast
Disclosed
08.10.2026
Updated
11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-w294-6q5q-53p8 - 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 this entry
    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
    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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