# Apache Camel JMS deserialization filter bypass

Advisory record · `GHSA-f755-xp6r-8q84`

- **Identifiers:** `GHSA-f755-xp6r-8q84` · `CVE-2026-43866`
- **State:** Confirmed
- **Severity:** CVSS 7.3 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-jms` (Maven): affected `>=3.0.0, <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`
- `org.apache.camel:camel-sjms` (Maven): affected `>=3.0.0, <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`
- `org.apache.camel:camel-sjms2` (Maven): affected `>=3.0.0, <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`
- `org.apache.camel:camel-amqp` (Maven): affected `>=3.0.0, <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`
- `org.apache.camel:camel-activemq` (Maven): affected `>=3.0.0, <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`
- `org.apache.camel:camel-activemq6` (Maven): affected `>=3.0.0, <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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0065, the 51st 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-f755-xp6r-8q84)

## Sources

- [GitHub Advisory Database: GHSA-f755-xp6r-8q84](https://github.com/advisories/GHSA-f755-xp6r-8q84)
- [OSV: GHSA-f755-xp6r-8q84](https://osv.dev/vulnerability/GHSA-f755-xp6r-8q84)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-43866>
- <https://github.com/apache/camel/pull/22970>
- <https://github.com/apache/camel/pull/22968>
- <https://github.com/apache/camel/pull/22945>
- <https://github.com/apache/camel/pull/22920>
- <https://github.com/apache/camel/pull/22918>
- <https://github.com/apache/camel/pull/22866>
- <https://github.com/apache/camel/commit/844bbf8c894c5e2bfa023579db80dcd3354c0e1b>
- <https://github.com/apache/camel/commit/81449eb6ef3edf856c84117ce708beb2ada8f650>
- <https://github.com/apache/camel/commit/75d7991b89265a2e8e62c7207165deb88c3a6ef3>
- <https://github.com/apache/camel/commit/6cb29c0bbd7d1c46f057eac46c4afa62c9f5e00f>
- <https://github.com/apache/camel/commit/17f8fcb22569f4c459b9e53c1485bfc764dc0015>

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-f755-xp6r-8q84>, 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-f755-xp6r-8q84/>. Everything for agents: <https://agentprime.io/llms.txt>.