The WBA has ordered Taylor to make a mandatory defence of his title against Dominican fighter Alberto Puello, unbeaten in 20 fights.
“The World Boxing Association (WBA) Championships Committee, in accordance with the organization’s rules, has decided that the Super Lightweight title, which was held by the Scottish Josh Taylor, is vacant,” said a WBA statement.
Taylor, however, took to Twitter to reveal he had vacated the title before being stripped.
After beating Catterall, the 31-year-old suggested the win in Glasgow would be his last fight at 140lbs.
“It’s probably my last fight at 140, to be honest, but we’ll see how it goes,” Taylor told the BBC.
“Anybody, anybody in the world – 147, 140, I’ll fight anybody.”