Apache Camel: Camel Message Header Injection via Improper Filtering

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

6.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2025-27636: 97.06% estimated exploitation activity in the next 30 days; percentile 99.89 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Bypass/Injection vulnerability in Apache Camel components under particular conditions. This issue affects Apache Camel: from 4.9.0 through <= 4.10.1, from 4.8.0 through <= 4.8.4, from 3.10.0 through <= 3.22.3. Users are recommended to upgrade to version 4.10.2 for 4.10.x LTS, 4.8.5 for 4.8.x LTS and 3.22.4 for 3.x releases. This vulnerability is present in Camel's default incoming header filter, that allows an attacker to include Camel specific headers that for some Camel components can alter the behaviours such as the camel-bean component, to call another method on the bean, than was coded in the application. In the camel-jms component, then a malicious header can be used to send the message to another queue (on the same broker) than was coded in the application. This could also be seen by using the camel-exec component. The attacker would need to inject custom headers, such as HTTP protocols. So if you have Camel applications that are directly connected to the internet via HTTP,…

Published by the source

9 Mar 2025, 15:31 UTC

Last modified by the source

25 Mar 2025, 18:38 UTC

Source last checked

26 Oct 2026, 16:35 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-2c2h-2855-mf97

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# Patch Next advisory brief: CVE-2025-27636

Advisory: Apache Camel: Camel Message Header Injection via Improper Filtering
IDs: CVE-2025-27636, GHSA-2c2h-2855-mf97
Record: https://patchnext.com/advisories/cve-2025-27636 (revision 1, source checked 26 Oct 2026, 16:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.apache.camel:camel-support 4.10.2, 4.8.5, 3.22.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.apache.camel:camel-support: affected >= 3.10.0, < 3.22.4; >= 4.9.0, < 4.10.2; >= 4.0.0-M1, < 4.8.5; fixed in 4.8.5, 3.22.4, 4.10.2

## Suggested inspection (read-only)
- Maven org.apache.camel:camel-support: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.apache.camel:camel-support.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-2c2h-2855-mf97 (GitHub-reviewed advisory GHSA-2c2h-2855-mf97 lists affected ranges: Maven org.apache.camel:camel-support >=3.10.0 =4.9.0 =4.0.0-M1 <4.8.5)

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