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Fencer Vulns
critical 9.8

CVE-2026-47323 in the critical feed json

Apache Camel: Camel-CXF Message Header Injection via Missing Inbound Filtering

published 2026-05-19 5 mo ago modified 2026-10-26 14 d ago also EUVD-2026-30895 , GHSA-8364-hfqj-pwm6

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
19.6%
EPSS 19.6% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Camel-CXF and Camel-Knative Message Header Injection via Missing Inbound Filtering

The CXF and Knative HeaderFilterStrategy implementations (CxfRsHeaderFilterStrategy in camel-cxf-rest, CxfHeaderFilterStrategy in camel-cxf-transport, and KnativeHttpHeaderFilterStrategy in camel-knative-http) only filter outbound Camel-internal headers via setOutFilterStartsWith, while not configuring inbound filtering via setInFilterStartsWith. As a result, an unauthenticated attacker can inject Camel-internal headers (e.g. CamelExecCommandExecutable, CamelFileName) via HTTP requests to CXF-RS or CXF-SOAP endpoints. When a route forwards messages from these endpoints to header-driven components such as camel-exec or camel-file, the injected headers override configured values, enabling remote code execution or arbitrary file writes. This is the same pattern that was previously addressed in camel-undertow (CVE-2025-30177), the broader incoming-header filter (CVE-2025-27636 and CVE-2025-29891), and non-HTTP strategies (CVE-2026-40453).

This issue affects Apache Camel: from 3.18.0 before 4.14.6, from 4.15.0 before 4.18.2.

Users are recommended to upgrade to version 4.19.0, which fixes the issue. If users are on the 4.18.x LTS releases stream, then they are suggested to upgrade to 4.18.2. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6.

Patch / fix

  • maven org.apache.camel:camel-cxf-rest 4.14.6, 4.18.2
  • Apache Software Foundation Apache Camel 4.14.6, 4.18.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-47323 updated cvss 9.8

camel: camel-cxf-rest: camel-cxf-transport: camel-knative-http: camel-exec: camel-file: camel-undertow: Apache Camel: Remote Code Execution via header injection due to missing inbound filtering

  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9, +2 more
    affected: workaround, no fix available
  • Red Hat build of Apache Camel 4 for Quarkus 3 camel-cxf-transport
    not affected: inline mitigations already exist
  • Red Hat build of Apache Camel for Spring Boot 4 camel-cxf-rest, camel-knative-http, camel-cxf-transport, camel-cxf-rest-starter, camel-cxf-transport-starter Red Hat Fuse 7 camel-knative-http, camel-cxf-transport, camel-cxf-transport-starter
    not affected: vulnerable code not present
  • Red Hat JBoss Enterprise Application Platform Expansion Pack camel-knative-http, camel-cxf-transport
    not affected: component not present
  • Red Hat Process Automation 7 camel-cxf-transport
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
5 mo ago

Exploit prediction

19.56% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.camel:camel-cxf-rest
>=3.18.0, <4.14.6
>=4.15.0, <4.18.2
4.14.6
4.18.2

Affected products

  • Apache Software Foundation Apache Camel
  • Red Hat OpenShift Serverless
  • Red Hat Red Hat build of Apache Camel 4 for Quarkus 3
  • Red Hat Red Hat build of Apache Camel for Spring Boot 4
  • Red Hat Red Hat Fuse 7
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat Process Automation 7

Classification

Weakness
  • CWE-178 Improper Handling of Case Sensitivity
  • CWE-791 Incomplete Filtering of Special Elements
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.