The Jenkins CLI can pass in parameters to a parameterized build. It uses the "-p" option for this. The arguments are parsed using args4j. The version of args4j that has been incorporated has a bug in the MapOptionHandler code where it will not accept a parameter value that has an equals sign ("=") in it; instead it will take everything up to the equals sign. The problem appears to be fixed in newer args4j code.
Any help for an alternate fix for this, till we get issue to be in resolved status.