Improper Neutralization of Internal Special Elements

Summary

A Bypass/Injection vulnerability in Apache Camel. This vulnerability is present in Camel's default incoming header filter, which allows an attacker to include Camel specific headers that, for some Camel components, can alter behaviors, such as the "camel-bean" component, or the "camel-exec" component. If you have Camel applications that are directly connected to the internet via HTTP, then an attacker could include parameters in the HTTP requests that are sent to the Camel application that get translated into headers. The headers could be both provided as request parameters for an HTTP methods invocation or as part of the payload of the HTTP methods invocation. All the known Camel HTTP components, such as "camel-servlet", "camel-jetty", "camel-undertow", "camel-platform-http", and "camel-netty-http" would be vulnerable out of the box. This CVE is related to the CVE-2025-27636: while they have the same root cause and are fixed with the same fix, CVE-2025-27636 was assumed to only be exploitable if an attacker could add malicious HTTP headers, while we have now determined that it is also exploitable via HTTP parameters. Like in CVE-2025-27636, exploitation is only possible if the Camel route uses particular vulnerable components. This vulnerability affects org.apache.camel:camel-support package versions 3.10.0 through 3.22.3, 4.0.0-M1 through 4.8.4, and 4.9.0 through 4.10.1.