In Crazy Bubble Tea mobile application authenticated attacker can obtain personal information about other users by enumerating a loyaltyGuestId parameter. Server does not verify the permissions required to obtain the data.
This issue was fixed in version 915 (Android) and 7.4.1 (iOS).
Exploitability
AV:NAC:LAT:NPR:LUI:NVulnerable System
VC:HVI:NVA:NSubsequent System
SC:NSI:NSA:N7.1/CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NOther