Recommended workaround for this bug: don't share the UUIDs of shares with other tenants.
Risk for this bug is fairly low because UUIDs are impossible to guess and a successful security breach would require obtaining the UUIDs using another security exploit. Also, this bug leaks sensitive information but doesn't allow actual access to the data unless a separate exploit is used to bypass share access control.
Recommended workaround for this bug: don't share the UUIDs of shares with other tenants.
Risk for this bug is fairly low because UUIDs are impossible to guess and a successful security breach would require obtaining the UUIDs using another security exploit. Also, this bug leaks sensitive information but doesn't allow actual access to the data unless a separate exploit is used to bypass share access control.