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-H
Casky was already ahead
This CVE exploits attack patterns that Casky's 0matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.
CVE-2026-47323 is a critical message header injection vulnerability affecting Apache Camel's CXF and Knative integration components. The vulnerability stems from asymmetric header filtering: while these components filter outbound Camel-internal headers, they fail to implement inbound filtering, allowing unauthenticated attackers to inject malicious headers that manipulate internal message processing. Organizations using camel-cxf-rest, camel-cxf-transport, or camel-knative-http are at immediate risk, particularly those exposing these integrations to untrusted networks or handling sensitive data through message headers. With a CVSS score of 9.8, this vulnerability can lead to authentication bypass, privilege escalation, or unauthorized data access depending on how injected headers influence downstream message handling.
While this CVE does not map directly to established MITRE ATT&CK techniques, Casky's security skills—powered by Claude AI's extended reasoning capabilities—would detect attack patterns associated with CWE-178 (Improper Neutralization of Special Elements) by analyzing message flows for suspicious header injection attempts, abnormal header values, and attempts to manipulate authentication or routing decisions. Practitioners using Casky would identify findings related to header manipulation in HTTP/messaging logs, unexpected Camel-internal header presence in inbound traffic, and anomalous routing or authentication decisions triggered by crafted headers. The platform's 754 mapped skills enable detection of exploitation attempts even without direct ATT&CK mapping, focusing on the underlying attack mechanics: header tampering, authentication evasion, and message processing manipulation.
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