High [CVE-2026-46726] Server-Side Request Forgery and sensitive data exposure
This high-severity Red Hat Linux advisory covers CVE-2026-46726 affecting Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16, Red Hat Build of Apache Camel 4.18 for Quarkus 3.33, Red Hat build of Apache Camel 4 for Quarkus 3.
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Summary
Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel in Vertx Websocket component.
The camel-vertx-websocket consumer mapped inbound WebSocket query and path parameters into the Camel Exchange header map without applying any HeaderFilterStrategy (VertxWebsocketConsumer.populateExchangeHeaders()).
Because nothing blocked the Camel header namespace, a client connecting to the WebSocket endpoint could set Camel-internal control headers - including CamelHttpUri (Exchange.HTTP_URI) - simply by supplying them as query parameters.
In a route where the WebSocket consumer feeds a downstream HTTP producer, the injected CamelHttpUri redirects the server-side HTTP request to an attacker-chosen destination (server-side request forgery - for example to an internal service or a cloud metadata endpoint).
In addition, the HTTP producer resolves Camel property placeholders on the resulting (attacker-controlled) URI, so placeholders embedded in the injected value - such as an environment-variable reference, an application property, or a vault reference - are resolved to their real values and sent to the attacker, disclosing environment variables, application properties and vault secrets.
- < 4.0.0
- < 4.14.8
- < 4.15.0
- < 4.18.3
- < 4.19.0
- < 4.21.0
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
- 4.21.0
- 4.14
- 4.14.8
- 4.18
- 4.18.3
- camel-vertx-websocket
- RHSA-2026:54622
- RHSA-2026:48118
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
- Restrict access to exposed WebSocket endpoints with authentication. If unable to upgrade, strip Camel-internal headers from inbound WebSocket messages before they reach downstream producers (for example removeHeaders('Camel*') and removeHeaders('camel*') at the start of the route).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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