Malfeasance does not require Forsaken. [quote]The Malfeasance exotic quest no longer requires owning the Forsaken expansion. Players who pick-up the New Light Malfeasance Intro quest will now be awarded the "Darkness In the Light" quest step upon killing the Ascendant Servitor Primeval boss.[/quote] https://www.bungie.net/en/News/Article/48838
Pretty sure Malfesence does indeed require Forsaken. I’m not sure where you said it was available to all players?