Corey Feldman will have hell to pay in court if he keeps spreading lies about the late Corey Haim ... so says Haim's mother.
Judy Haim tells TMZ she's pissed about Corey Feldman blabbing to the media about alleged sexual abuse her son suffered as a kid in Hollywood.
She says that's all BS ... adding Feldman is just looking for attention and a big paycheck. Judy also says she sent Feldman a cease and desist letter back in July ... threatening him to stop the lies, or else.
Judy says she'll pursue legal action if Feldman doesn't shut his trap. It might be an uphill battle ... seeing as how you can't defame a dead person.
Feldman's rep tells us he's constantly asked about Haim, especially recently. The rep adds Feldman has tried to be respectful of both Corey and Judy.