# Apache Camel-Hazelcast: Unsafe Java deserialization in default-configured managed Hazelcast instances enables remote code execution

Advisory record · `GHSA-xww8-mxqw-m84w`

- **Identifiers:** `GHSA-xww8-mxqw-m84w` · `CVE-2026-43865`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-502](https://cwe.mitre.org/data/definitions/502.html)
- **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md)
- **Published:** 6 Jul 2026
- **Updated:** 26 Aug 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 6 Jul 2026, 09:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.apache.camel:camel-hazelcast` (Maven): affected `>=4.0.0, <4.14.8 || >=4.15.0, <4.18.3 || >=4.19.0, <4.21.0`; fixed in `4.14.8`, `4.18.3`, `4.21.0`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0098, the 62nd percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:19 UTC: First seen by agentprime
- 31 Oct 2026, 14:19 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-xww8-mxqw-m84w)

## Sources

- [GitHub Advisory Database: GHSA-xww8-mxqw-m84w](https://github.com/advisories/GHSA-xww8-mxqw-m84w)
- [OSV: GHSA-xww8-mxqw-m84w](https://osv.dev/vulnerability/GHSA-xww8-mxqw-m84w)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-43865>
- <https://github.com/apache/camel/pull/22943>
- <https://github.com/apache/camel/pull/22946>
- <https://github.com/apache/camel/pull/22955>
- <https://github.com/apache/camel/commit/5caf4368551f6d3b61690d5db03869491390d446>
- <https://github.com/apache/camel/commit/7a309042f22493082647a410d9d8cafd672b1c74>
- <https://github.com/apache/camel/commit/974a11b5ed5e2d50722f33aa48f61898395ea45b>
- <https://camel.apache.org/security/CVE-2026-43865.html>
- <https://github.com/apache/camel>
- <https://github.com/apache/camel/releases/tag/camel-4.14.8>
- <https://github.com/apache/camel/releases/tag/camel-4.18.3>
- <https://github.com/apache/camel/releases/tag/camel-4.21.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-xww8-mxqw-m84w>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-xww8-mxqw-m84w/>. Everything for agents: <https://agentprime.io/llms.txt>.