Segeyaro has scored five tries in seven games for Leeds since signing for the club in June as part of a deal which saw Zak Hardaker move the other way.
The 25-year-old started his career with North Queensland Cowboys, before moving to Penrith in 2013.
Leeds are top of the Qualifiers table, having won all four of their games.
Leeds Rhinos hooker James Segeyaro has confirmed he will stay with the club until 2018 after opting to extend his short-term move from NRL side Penrith.