“UNRWA was established in 1949 by the UN General Assembly (UNGA) to provide relief to all refugees resulting from the 1948 conflict. It also provided relief to Jewish and Arab Palestine refugees inside the State of Israel following the 1948 conflict until the Israeli government took over responsibility for them in 1952.[7][8][9] As a subsidiary body of the UNGA, UNRWA’s mandate is subject to periodic renewal every three years; it has consistently been extended since its founding, most recently until 30 June 2026.[10]”
I mean, you’re right in that they are a separate legal entity from the UN General Assembly, but they are a subsidiary body of it.
https://en.m.wikipedia.org/wiki/UNRWA
“UNRWA was established in 1949 by the UN General Assembly (UNGA) to provide relief to all refugees resulting from the 1948 conflict. It also provided relief to Jewish and Arab Palestine refugees inside the State of Israel following the 1948 conflict until the Israeli government took over responsibility for them in 1952.[7][8][9] As a subsidiary body of the UNGA, UNRWA’s mandate is subject to periodic renewal every three years; it has consistently been extended since its founding, most recently until 30 June 2026.[10]”