Does a rule of customary international law to the effect that courts have universal civil jurisdiction to hear civil cases alleging acts in violation of jus cogens?

As far as the right to reparation is concerned, I find no evidence in the cases reviewed by my colleague demonstrating the existence of a rule of customary international law to the effect that courts have universal civil jurisdiction to hear civil cases alleging acts in violation of jus cogens. On the contrary, most of these cases have affirmed state immunity in civil proceedings alleging acts of torture. However, even if such a rule of customary international law existed, it would have to be weighed against other rules of customary international law and, namely the rule of state immunity. As the I.C.J. found in a similar context, I see no contradiction in the co-existence of a right to reparation and state immunity (Germany v. Italy, at paras. 92-96).