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Critical Hazelcast CVEs

3 CVEs, 1 protected by Waratek

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Product hazelcast✕
Overview 3 matches · 1 protected · 0 exploited · 0 CISA KEV · 1 public PoC · 0 EPSS ≥ 0.5
3matches 1protected33.3% 0exploited0.0% 0CISA KEV0.0% 1public PoC33.3% 0EPSS ≥ 0.50.0%
Protected by Waratek 1 33.3% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 2 66.7%
Critical 3 100.0% High 0 0.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 1 33.3% partly blocked 0 0.0% not blocked 2 66.7% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 1 33.3% Forecast only 0 0.0% No public exploit 2 66.7%
split by peak 1 / quarter
No exploit published: 2Protected by Waratek: 1 Critical: 3 not blocked: 2blocked by ARMR today: 1 No public exploit: 2Proof of concept only: 1
Q1 221 Protected by Waratek1 Critical1 blocked by ARMR today1 Proof of concept only1 Q2 220 Q3 220 Q4 221 No exploit published1 Critical1 not blocked1 No public exploit1 Q1 230 Q2 230 Q3 230 Q4 230 Q1 240 Q2 240 Q3 240 Q4 240 Q1 250 Q2 250 Q3 250 Q4 250 Q1 260 Q2 260 Q3 260 Q4 261 No exploit published1 Critical1 not blocked1 No public exploit1
Q2 22Q4 22Q2 23Q4 23Q2 24Q4 24Q2 25Q4 25Q2 26Q4 26
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CVE Severity Published▾ Status Exploitation Description
CVE-2026-107726 Critical 2026-10-08 No exploit published No public exploit Hazelcast is a unified real-time data platform combining stream processing with a fast data store. Prior to 5.4.5, 5.5.10, and 5.6.1, improper validation of data supplied by a malicious client able to connect to a cluster allows arbitrary reads from a cluster member's Java heap, off-heap data, and JVM process address space. The same flaw can crash cluster members and, in some Hazelcast Enterprise Edition configurations, corrupt memory with possible arbitrary code execution. Both slim and full distributions are affected. This issue is fixed in versions 5.4.5, 5.5.10, 5.6.1, and 5.7.0.
CVE-2022-36437 Critical 2022-12-29 No exploit published No public exploit The Connection handler in Hazelcast and Hazelcast Jet allows a remote unauthenticated attacker to access and manipulate data in the cluster with the identity of another already authenticated connection. The affected Hazelcast versions are through 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.
CVE-2022-0265 Critical 2022-03-03 Protected by Waratek Proof of concept only Improper Restriction of XML External Entity Reference in GitHub repository hazelcast/hazelcast in 5.1-BETA-1.