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CVE-2026-47323

⛔ critical
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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

Description

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.

CVSS Score
9.8
Critical
EPSS Score
0.1
Exploit Probability
Published Date
2026-05-19
First Seen: 2026-05-20
📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 325,703 vulnerabilities in our database.

#31,028
Top 10% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 19, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Quac Tran
SSVC data provided by CISA
Last Modified 2026-06-04
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)

📦 Affected Products 2

🔗 References 1

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-23552 ⛔ critical 9.1 0.0 Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy Apache Camel Keycloak component.  The Camel-Keycloak Key... 2026-02-23
CVE-2026-25747 ⚠️ high 8.8 0.1 Deserialization of Untrusted Data vulnerability in Apache Camel LevelDB component. The Camel-LevelDB DefaultLevelDBSeri... 2026-02-23
CVE-2025-66169 🔶 medium 5.3 0.2 Cypher Injection vulnerability in Apache Camel camel-neo4j component. This issue affects Apache Camel: from 4.10.0 befo... 2026-01-14
CVE-2025-30177 🔶 medium 6.5 0.6 Bypass/Injection vulnerability in Apache Camel in Camel-Undertow component under particular conditions. This issue affe... 2025-04-01
CVE-2025-29891 🔶 medium 4.8 0.2 Bypass/Injection vulnerability in Apache Camel. This issue affects Apache Camel: from 4.10.0 before 4.10.2, from 4.8.0 ... 2025-03-12
CVE-2025-27636 🔶 medium 5.6 28.4 Bypass/Injection vulnerability in Apache Camel components under particular conditions. This issue affects Apache Camel:... 2025-03-09
These CVEs affect the same products