# Apache Camel-Undertow: The muteException consumer option defaulted to false, so a processing error returned the full Java stack trace in the HTTP response body

Advisory record · `GHSA-hjg2-f45w-c566`

- **Identifiers:** `GHSA-hjg2-f45w-c566` · `CVE-2026-56139`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-209](https://cwe.mitre.org/data/definitions/209.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md)
- **Published:** 6 Jul 2026
- **Updated:** 28 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-undertow` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0057, the 47th 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-hjg2-f45w-c566)

## Sources

- [GitHub Advisory Database: GHSA-hjg2-f45w-c566](https://github.com/advisories/GHSA-hjg2-f45w-c566)
- [OSV: GHSA-hjg2-f45w-c566](https://osv.dev/vulnerability/GHSA-hjg2-f45w-c566)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-56139>
- <https://github.com/apache/camel/pull/23913>
- <https://github.com/apache/camel/pull/23923>
- <https://github.com/apache/camel/pull/23990>
- <https://github.com/apache/camel/commit/6cea553aa42ed1326ac57ad800d66674bc453932>
- <https://github.com/apache/camel/commit/b1badb58a407e4d16c8b6bba81650d4c68e55eaf>
- <https://github.com/apache/camel/commit/fdcf67a00470783ccb93b948883b6a4c5275aff5>
- <https://camel.apache.org/security/CVE-2026-56139.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-hjg2-f45w-c566>, 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-hjg2-f45w-c566/>. Everything for agents: <https://agentprime.io/llms.txt>.