A flaw was found in Jolokia's JSR-160 proxy functionality where insufficient validation of client-controlled JMX service URLs allows a bypass of the denylist introduced to mitigate CVE-2018-1000130. The proxy accepts a "target.url" value from a Jolokia POST request and passes it to "JMXServiceURL" and "JMXConnectorFactory" for establishing the remote JMX connection. The existing denylist only rejects URLs matching "service:jmx:rmi:///jndi/ldap:.*", which can be bypassed using alternative valid JMX service URL forms, including "ldaps://" schemes or LDAP URLs with a non-empty JMX host component. These URLs are accepted as valid "JMXServiceURL" objects and can cause the Jolokia agent JVM to perform a JNDI lookup against an attacker-controlled LDAP endpoint. This can result in server-side request forgery (SSRF), forwarding of supplied JMX credentials to the remote endpoint, and potentially remote code execution depending on the classes and configuration available in the target JVM.