DefaultActionMapper is cleaning up correct action names

With the new security release I'm seeing warnings in my logs for 'correct' action names:

08:57:39,711 WARN [DefaultActionMapper] Action [getCamelCase] do not match allowed action names pattern [[a-z][A-Z][0-9][.\-_!/]], cleaning it up!

It seems to be linked to actions in camelCase. I believe those are correct.

The current pattern to check is the following: [a-z][A-Z][0-9][.\\-_!/]
I think it should be something like follows: [a-zA-Z0-9.\\-_!/]*

I did a quick test with the following results:

	public static void main(String[] args)
	{
		String currentPattern = "[a-z]*[A-Z]*[0-9]*[.\\-_!/]*";
		String newPattern = "[a-zA-Z0-9.\\-_!/]*";

		System.out.println("test".matches(currentPattern)); //true
		System.out.println("testCamel".matches(currentPattern)); //false

		System.out.println("test".matches(newPattern));  //true
		System.out.println("testCamel".matches(newPattern)); //true
}

Please beware that I am not a regex specialist so review it carefully.