---
title: "CVE-2026-33453: Apache camel-coap allows header injection that can lead to remote code execution"
url: https://erroneo.us/security/cve/CVE-2026-33453/
description: "CVE-2026-33453 (org.apache.camel:camel-coap (Maven)): Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Apache…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-04-27
date_modified: 2026-07-15
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-33453"
kev: false
cvss: 8.1
epss: 0.07164
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-33453: Apache camel-coap allows header injection that can lead to remote code execution

**Signal:** Normal patch cycle. No exploitation signal; fix it in your next routine update if you are affected. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 7.2% , percentile 94: FIRST’s model estimates a 7.2% chance of exploitation activity in the next 30 days, higher than 94% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes org.apache.camel:camel-coap (Maven) >= 4.14.0, <= 4.14.5, fixed in 4.14.6 ; org.apache.camel:camel-coap (Maven) >= 4.18.0, < 4.18.1, fixed in 4.18.1 . Check your lockfile, including transitive dependencies.

## What it is

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Apache Camel Camel-Coap component. Apache Camel's camel-coap component is vulnerable to Camel message header injection, leading to remote code execution when routes forward CoAP requests to header-sensitive producers (e.g. camel-exec) The camel-coap component maps incoming CoAP request URI query parameters directly into Camel Exchange In message headers without applying any HeaderFilterStrategy. Specifically, CamelCoapResource.handleRequest() iterates over OptionSet.getUriQuery() and calls camelExchange.getIn().setHeader(...) for every query parameter. CoAPEndpoint extends DefaultEndpoint rather than DefaultHeaderFilterStrategyEndpoint, and CoAPComponent does not implement HeaderFilterStrategyComponent; the component contains no references to HeaderFilterStrategy at all. As a result, an unauthenticated attacker who can send a single CoAP UDP packet to a Camel route consuming from coap:// can inject arbitrary Camel internal headers (those prefixed with Camel) into the Exchange. When the route delivers the message to a header-sensitive producer such as camel-exec, camel-sql, camel-bean, camel-file, or template components (camel-freemarker, camel-velocity), the injected headers can alter the producer's behavior. In the case of camel-exec, the CamelExecCommandExecutable and CamelExecCommandArgs headers override the executable and arguments configured on the endpoint, resulting in arbitrary OS command execution under the privileges of the Camel process. The producer's output is written back to the Exchange body and returned in the CoAP response payload by CamelCoapResource, giving the attacker an interactive RCE channel without any need for out-of-band exfiltration. Exploitation prerequisites are minimal: a single unauthenticated UDP datagram to the CoAP port (default 5683). CoAP (RFC 7252) has no built-in authentication, and DTLS is optional and disabled by default. Because the protocol is UDP-based, HTTP-layer WAF/IDS controls do not apply. This issue affects Apache Camel: from 4.14.0 through 4.14.5, from 4.18.0 before 4.18.1, 4.19.0. Users are recommended to upgrade to version 4.18.1 or…

## Affected packages

- Maven `org.apache.camel:camel-coap` >= 4.14.0, <= 4.14.5 → fixed: 4.14.6
- Maven `org.apache.camel:camel-coap` >= 4.18.0, < 4.18.1 → fixed: 4.18.1

## Affected products (CVE record)

- Apache Software Foundation Apache Camel: 4.14.0 <= 4.14.5, 4.18.0 < 4.18.1, 4.19.0

## Severity

- CISA-ADP CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- redhat-SADP CVSS 3.1: 8.1 `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 7.16% probability of exploitation activity in the next 30 days; percentile 94.

## Sources

- [camel.apache.org](https://camel.apache.org/security/CVE-2026-33453.html)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:17668)
- [GitHub Advisory GHSA-695c-x5gc-94gj](https://github.com/advisories/GHSA-695c-x5gc-94gj)
- [CVE.org record CVE-2026-33453](https://www.cve.org/CVERecord?id=CVE-2026-33453)
- [NVD entry CVE-2026-33453](https://nvd.nist.gov/vuln/detail/CVE-2026-33453)
- [openwall.com](http://www.openwall.com/lists/oss-security/2026/04/26/3)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2026-33453)
- [RHBZ#2463184](https://bugzilla.redhat.com/show_bug.cgi?id=2463184)
- [security.access.redhat.com](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33453.json)
- [github.com](https://github.com/apache/camel/pull/22146)
- [github.com](https://github.com/apache/camel/pull/22147)
- [github.com](https://github.com/apache/camel/pull/22148)
- [github.com](https://github.com/apache/camel/commit/05cffa5ec05ff2ec3c50a77825625da6e426e7a8)
- [github.com](https://github.com/apache/camel/commit/3926ab2b7745e36da2cd8e0dc019018bc415aff9)
- [github.com](https://github.com/apache/camel/commit/e074c01a719cccf3b1c2efbd2ff31e60fd6220ce)
- [issues.apache.org](https://issues.apache.org/jira/browse/CAMEL-23222)

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Source page: https://erroneo.us/security/cve/CVE-2026-33453/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt