Specifically it doesn't say "safe and effective", it says "benefits outweight risks" (BBC says that at well, but they removed that bit from the headline).
I believe the title is from the EMA press conference, @ 07:20[1]
“ The committee has come to a clear scientific conclusion: This is a safe and effective vaccine. Its benefits in protecting people from COVID19 with the associated risks of death and hospitalization outweigh the possible risks.”
“ The committee has come to a clear scientific conclusion: This is a safe and effective vaccine. Its benefits in protecting people from COVID19 with the associated risks of death and hospitalization outweigh the possible risks.”