Vafaei has been charged with "spreading corruption on earth through arson and destruction of public property," according to his lawyer Babak Paknia.
He initially received the death sentence from the Mashhad Revolutionary Court in January 2022.
Paknia said the 9th branch of the Supreme Court decided to uphold Vafaei's verdict "despite numerous flaws."
"Regarding the flaws and the involvement of third parties in the trial process, correspondence was made with the head of the judiciary," he said. "I hope that his special inspectors intervene before it is too late."
The decision was made public hours after Iran’s judiciary executed seven political prisoners, including one Kurdish man in Sanandaj, western Iran, and six ethnic Arab inmates in Ahvaz, Khuzestan Province in the south.
Saman Mohammadi Khiyareh, a Kurdish political prisoner from Sanandaj in western Iran, was executed after more than 15 years in detention, the Judiciary's Mizan news agency reported.
Mohammadi Khiyareh was first arrested in February 2010 and sentenced to death by Tehran’s Revolutionary Court on charges of moharebeh—“enmity against God.” The Supreme Court initially overturned the ruling, replacing it with a 15-year prison term for alleged membership in opposition groups. However, following pressure from security agencies, the court reinstated the death sentence after a retrial.
Mizan also reported the execution of six people in Khuzestan Province on security-related charges but withheld their names, a move that rights groups said makes the cases “secret executions.”
The men had been convicted of “killing police officers, communicating with Israel, separatism, bombings, and armed attacks,” the judiciary said.
The Karun Human Rights Organization later identified the executed prisoners as Ali Majdam, Moein Khanfari, Salem Mousavi, Mohammadreza Moghaddam, Adnan Alboshokeh (Ghobeishavi), and Habib Dris, arrested between late 2018 and early 2019.
Rights groups reported a sharp rise in executions across Iran in September 2025. Hengaw said it documented at least 187 executions during the month, while Iran Human Rights put the figure at 171, the highest monthly count in two decades.
Only 10 of those executions—less than six percent—were officially announced, Iran Human Rights said. Most were related to drug or murder charges, while three were for moharebeh or espionage.
The group warned that the surge marks an unprecedented pace of executions in the past 30 years, recording more than 1,040 executions in the first nine months of 2025—double the number during the same period last year.