Is CVE-2026-47323 actively exploited?

No active exploitation of CVE-2026-47323 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-47323 be exploited remotely?

Yes. CVE-2026-47323 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-47323?

CVE-2026-47323 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-47323

CWE-178Published: May 19, 2026· Updated: May 20, 2026

9.8

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:38.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-47323 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.