Bug 2479869 (CVE-2026-47323)

Summary:	CVE-2026-47323 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
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	asoldano, bbaranow, bmaxwell, bstansbe, dhanak, dlofthou, drosa, dsimansk, fmariani, fmongiar, gmalinko, ibek, istudens, ivassile, iweiss, janstey, jnethert, jrokos, jwon, kingland, kverlaen, mcarlett, mnovotny, mosmerov, msvehla, nwallace, pberan, pdelbell, pesilva, pjindal, pmackay, rstancel, rstepani, sausingh, smaestri, tcunning, thjenkin, vdosoudi, yfang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in Apache Camel. An unauthenticated attacker could inject Camel-internal headers via HTTP requests to CXF-RS or CXF-SOAP endpoints due to missing inbound filtering in the `HeaderFilterStrategy` implementations. This allows the attacker to override configured values when messages are forwarded to header-driven components like camel-exec or camel-file, potentially leading to remote code execution or arbitrary file writes.	Story Points:	---
Clone Of:		Environment:
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-19 14:03:21 UTC

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.