SemEval-2026 Task 9: Detecting Multilingual, Multicultural and Multievent Online Polarization. - Usman Naseem; Robert Geislinger; Juan Ren; Sarah Kohail; Rudy Alexandro Garrido Veliz; P. Sam Sahil; Yiran Zhang; Marco Antonio Stranisci; Idris Abdulmumin; Özge Alaçam; Cengiz Acartürk; Aisha Jabr; et al. (CoRR, 2026)