At the 2015 World Championships in Moscow, Brânză was eliminated in the second round by Estonia's Katrina Lehis, whom she had always defeated before. In the team event Romania defeated successively Turkey, Switzerland, Hungary and Ukraine to meet China in the final. Brânză opened the match against Xu Anqi, but failed to find an edge and was defeated 2-5. The following bouts proved as difficult and Brânză entered the last relay on 28-36. She could not bridge the gap and Romania lost eventually on 36-45, taking the silver medal. Brânză finished the season World No.4.