Update 2021-11-08 (2): According to further reports, fully vaccinated travellers from Sweden and Finland will also be permitted to enter Singapore from 29 November via the “vaccinated travel lanes” programme. For details see the link below.
CNBC
Update 2021-11-08 (1): As of 29 November, Malaysia and Singapore will allow quarantine-free travel between both countries for fully vaccinated travellers.