Jordyn Woods could find herself in some legal hot water if she spills too much Kardashian tea on Jada Pinkett Smith's show ... because we've learned she signed a contract with the famous fam promising to muzzle herself.
Sources familiar with the non-disclosure agreement tell TMZ ... Woods -- who's been on 'KUWTK' for years -- signed to an NDA, which prohibits her from disclosing details about the lives of Kris, Kim, Khloe and the rest of the brood.