Apache Camel: Camel-CXF Message Header Injection via Missing Inbound Filtering
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Camel | 3.18.0 to before 4.14.6; 4.15.0 to before 4.18.2 | 4.14.6, 4.18.2 | Patch available | CNA |
| — | org.apache.camel:camel-cxf-rest (Maven) | 3.18.0 to before 4.14.6 | 4.14.6 | Patch available | GHSA-8364-hfqj-pwm6 |
| — | org.apache.camel:camel-cxf-rest (Maven) | 4.15.0 to before 4.18.2 | 4.18.2 | Patch available | GHSA-8364-hfqj-pwm6 |
- Apache Camel VendorApache Affected 3.18.0 to before 4.14.6; 4.15.0 to before 4.18.2 Fixed in 4.14.6, 4.18.2 Patch available CNA
- org.apache.camel:camel-cxf-rest (Maven) Vendor— Affected 3.18.0 to before 4.14.6 Fixed in 4.14.6 Patch available GHSA-8364-hfqj-pwm6
- org.apache.camel:camel-cxf-rest (Maven) Vendor— Affected 4.15.0 to before 4.18.2 Fixed in 4.18.2 Patch available GHSA-8364-hfqj-pwm6
Remediation
- Fix · CNA Apache Camel (Apache Software Foundation) Fixed in 4.14.6, 4.18.2
- Fix · GHSA-8364-hfqj-pwm6 org.apache.camel:camel-cxf-rest (Maven) Fixed in 4.14.6 Advisory →
- Fix · GHSA-8364-hfqj-pwm6 org.apache.camel:camel-cxf-rest (Maven) Fixed in 4.18.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Serverless | Affected | No fix yet |
Not affected: 5 products
- Red Hat Fuse 7
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Process Automation 7
- Red Hat build of Apache Camel 4 for Quarkus 3
- Red Hat build of Apache Camel for Spring Boot 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-47323
- 2026-10-03 Alias added: GHSA-8364-hfqj-pwm6
- 2026-10-05 Weakness changed · GHSA-8364-hfqj-pwm6
- 2026-10-05 2 new references · GHSA-8364-hfqj-pwm6
- 2026-10-25 EPSS moved to the 95th–99th percentile
- 2026-10-25 Priority changed: MEDIUM → HIGH
References
More Apache Camel vulnerabilities
- TI-2026-76322 Unsafe deserialization in Apache Camel camel-hazelcast CVSS 4.0CRITICAL 10.0
- TI-2026-18973 Apache Camel: Camel-Keycloak: Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy CVSS 3.1CRITICAL 9.1
- TI-2026-76339 Path traversal in Apache Camel azure-files component CVSS 3.1CRITICAL 9.1
- TI-2026-76330 Path traversal in Apache Camel FTP consumer escapes polled directory CVSS 3.1CRITICAL 9.1
- TI-2025-20435 Apache Camel: Camel Message Header Injection via Improper Filtering CVSS 3.1MEDIUM 5.6
- TI-2026-25849 Mass assignment in Apache Camel CVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-47323 · CVE Program
- CVE-2026-47323 · NVD
- FIRST EPSS
- GHSA-8364-hfqj-pwm6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-47323 · Red Hat security data · CC BY 4.0
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