Canterbury District Health Board has temporarily taken its COVID-19 vaccination booking system offline after a potential security vulnerability was discovered by a member of the public that exposed details of 716 people who had registered to use the system.

Hutt Valley and Capital & Coast DHBs, which use a different version of the booking system, are reviewing the security of their internal system in light of the Canterbury incident, according to the Ministry of Health.

The breach potentially allowed those invited to make appointments to view details about other individuals also making appointments.