Two hours ago, the NASA Watch Twitter account posted that Walt Cunningham has died. This is the only place I have seen this news so far, but it's not unreasonable to assume it's true. Just note that there is a small chance this news is incorrect since there is only one source claiming it thus far.
Walt Cunningham was the Apollo 7 LMP. Apollo 7 was the first manned Apollo flight and performed the mission of Apollo 1: testing the command module in Earth orbit. It was his only flight into space. He was the last surviving crew member of Apollo 7, which joins Apollos 12 and 14 in having no remaining living crew.
Remaining Apollo astronauts, with their mission and position:
Frank Borman, CDR 8
Jim Lovell, CMP 8, CDR 13
Bill Anders, LMP 8
Dave Scott*, CMP 9, CDR 15
Rusty Schweickart, LMP 9
Tom Stafford, CDR 10, CDR ASTP
Buzz Aldrin*, LMP 11
Fred Haise, LMP 13
Ken Mattingly, CMP 16
Charlie Duke*, LMP 16
Harrison Schmitt*, LMP 17
Joseph Kerwin, Science Pilot, Skylab 2
Jack Lousma, Pilot, Skylab 3
Edward Gibson, Science Pilot, Skylab 4
Vance Brand, CMP ASTP
* - Walked on the moon
Walt Cunningham was the Apollo 7 LMP. Apollo 7 was the first manned Apollo flight and performed the mission of Apollo 1: testing the command module in Earth orbit. It was his only flight into space. He was the last surviving crew member of Apollo 7, which joins Apollos 12 and 14 in having no remaining living crew.
Remaining Apollo astronauts, with their mission and position:
Frank Borman, CDR 8
Jim Lovell, CMP 8, CDR 13
Bill Anders, LMP 8
Dave Scott*, CMP 9, CDR 15
Rusty Schweickart, LMP 9
Tom Stafford, CDR 10, CDR ASTP
Buzz Aldrin*, LMP 11
Fred Haise, LMP 13
Ken Mattingly, CMP 16
Charlie Duke*, LMP 16
Harrison Schmitt*, LMP 17
Joseph Kerwin, Science Pilot, Skylab 2
Jack Lousma, Pilot, Skylab 3
Edward Gibson, Science Pilot, Skylab 4
Vance Brand, CMP ASTP
* - Walked on the moon