This indicates an attack attempt to exploit a remote Code Execution Vulnerability in Apache Camel.
The vulnerability is due to an error when handling a maliciously crafted XSL stylesheets in the XSLT component. A remote attacker could exploit this to execute arbitrary code execution within the context of the application, via a crafted XSL stylesheets in the XSLT component.
Apache Software Foundation Camel 2.11.0 to 2.11.3
Apache Software Foundation Camel 2.12.0 to 2.12.2
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.