Dehashed login details for Poshmark customers have been circulating online following the data breach a few months ago. The data includes email addresses, hashed passwords, gender, geographic location, names, and usernames. The details were initially put up for sale on the dark web for $750 on August 1. Users should pay attention to data breach notifications and change the passwords for affected accounts as soon as they learn of a potential compromise. The price for dehashed accounts would increase significantly, as these can be used in credential stuffing attacks.
Source: https://www.bleepingcomputer.com/news/security/cracked-passwords-for-poshmark-accounts-being-sold-online/