The use of online pornography, also known as Internet pornography use or cybersex, can be considered a problematic behavior of Internet use with risk of addiction. This problematic use could have adverse effects on sexual development and sexual activity, especially among young people. The aim of this study was to adapt and validate the Cyber Pornography Addiction Test (CYPAT) in a sample of 313 young university students. The participants completed the CYPAT, the Smartphone Addiction Scale (SAS) and the Family Adaptability and Cohesion Scale (FACES-IV). A confirmatory factor analysis was conducted, the internal consistency of the CYPAT was tested and the scale’s concurrent validity was measured by correlating CYPAT scores with the family function variables (cohesion and flexibility) measured on FACES-IV and smartphone addiction measured by the SAS. The results revealed an acceptable fit of the one-factor structure of the scale. The present study thus confirmed the adequate psychometric properties of the brief version of the Cyber Pornography Addiction Scale and its relationship to variables of family maladjustment and problematic smartphone use.