The recently rehabbed Parkland star, 26, broke his jaw on Sunday at his Los Angeles-area home, a source confirms to PEOPLE.
The insider also confirms that Efron, who slipped on a puddle, has his mouth wired shut and received stitches from a gash he suffered. Plans to promote upcoming film That Awkward Moment have been postponed.
E! News was the first to report the story. • Reporting by JULIE JORDAN