EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
com.hazelcast:hazelcast☕com.hazelcast:hazelcast☕com.hazelcast:hazelcast☕com.hazelcast:hazelcast☕com.hazelcast:hazelcast☕com.hazelcast:hazelcast☕com.hazelcast.jet:hazelcast-jet☕com.hazelcast.jet:hazelcast-jet-enterprise+6 moreReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.hazelcast:hazelcast | all versions | 3.12.13 |
| ☕Maven | com.hazelcast:hazelcast | ≥ 4.0 | No fix |
| ☕Maven | com.hazelcast:hazelcast | ≥ 4.1&&< 4.1.10 | 4.1.10 |
| ☕Maven | com.hazelcast:hazelcast | ≥ 4.2&&< 4.2.6 | 4.2.6 |
| ☕Maven | com.hazelcast:hazelcast | ≥ 5.0&&< 5.0.4 | 5.0.4 |
| ☕Maven | com.hazelcast:hazelcast | ≥ 5.1&&< 5.1.3 | 5.1.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.hazelcast:hazelcast. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update com.hazelcast:hazelcast to 3.12.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c5hg-mr8r-f6jp is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-c5hg-mr8r-f6jp is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-c5hg-mr8r-f6jp. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-c5hg-mr8r-f6jp in your dependencies?
O3 detects GHSA-c5hg-mr8r-f6jp across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.