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CVE-2026-46592 – Confused Deputy / Unauthorized SOAP Operation Invocation – Apache Camel CXF 4.0….

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Summary

CVE-2026-46592 is an Improper Input Validation / Confused Deputy vulnerability in the Apache Camel CXF SOAP component, affecting versions 4.0.0 through 4.20.x. An unauthenticated remote attacker can inject a crafted HTTP header into a Camel route that bridges an HTTP consumer to a CXF SOAP producer, redirecting the backend SOAP service to invoke an attacker-chosen WSDL operation instead of the one the route intended. The vulnerability is rated High severity with a CVSS v3.1 score of 7.5.

Technical details

  • Root cause: The camel-cxf producer resolves which SOAP operation to invoke from the operationName and operationNamespace Exchange headers. The constant values for these headers (CxfConstants.OPERATION_NAME / OPERATION_NAMESPACE) were the plain strings operationName / operationNamespace — names that do not begin with the Camel/ prefix. As a result, HttpHeaderFilterStrategy, which only blocks headers in the Camel namespace, passed them through from an inbound HTTP request directly into the Exchange.
  • Trigger conditions: Exploitable only in Camel routes that bridge an HTTP consumer (e.g., platform-http, camel-servlet, camel-jetty, camel-undertow) to a cxf: producer, where the HTTP consumer endpoint is reachable by untrusted clients.
  • Attack vector: An unauthenticated HTTP client sends a request carrying a crafted operationName header to the exposed Camel HTTP endpoint. The CxfProducer resolves and invokes the attacker-specified WSDL operation on the backend SOAP service — a classic confused-deputy redirection requiring no credentials.
  • Impact: The attacker can cause the backend SOAP service to execute WSDL operations other than those intended by the route — for example, substituting a read-only operation with a destructive one — and can extract confidential data returned by the backend service (CVSS C:H). The camel-cxfrs component is also affected, as it shares the same unqualified header constants through the camel-cxf-common module.

Affected software

  • Apache Camel 4.0.0 through 4.14.7
  • Apache Camel 4.15.0 through 4.18.2
  • Apache Camel 4.19.0 through 4.20.x
  • The camel-cxfrs component is also affected via shared constants in camel-cxf-common

Severity

CVSS v3.1 Base Score: 7.5 (High)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Upgrade to Apache Camel 4.21.0 (latest stable). After upgrading, operation-selection headers are renamed to CamelCxfOperationName / CamelCxfOperationNamespace and are filtered at transport boundaries. Consult the 4.21 upgrade guide for the cross-transport carrier-header pattern.
  • LTS (4.14.x) users: Upgrade to 4.14.8.
  • 4.18.x users: Upgrade to 4.18.3.
  • If immediate upgrade is not possible: Strip the operationName and operationNamespace headers from all untrusted HTTP ingress before the cxf: producer node in the route, and set the operation name explicitly from a trusted source within the route definition.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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