BEIRUT, Lebanon — In a mysterious trip last month, Mahmoud Abbas, the Palestinian president, traveled to Saudi Arabia’s capital for consultations with the hard-charging crown prince about President Trump’s plans for Middle East peace. What was said when the doors were closed, however, has since roiled the region.

According to Palestinian, Arab and European officials who have heard Mr. Abbas’s version of the conversation, Crown Prince Mohammed bin Salman presented a plan that would be more tilted toward the Israelis than any ever embraced by the American government, one that presumably no Palestinian leader could ever accept.

The Palestinians would get a state of their own but only noncontiguous parts of the West Bank and only limited sovereignty over their own territory. The vast majority of Israeli settlements in the West Bank, which most of the world considers illegal, would remain. The Palestinians would not be given East Jerusalem as their capital and there would be no right of return for Palestinian refugees and their descendants.

The White House on Sunday denied that was its plan, saying it was still months away from finalizing a blueprint for peace, and the Saudi government denied that it supports those positions.