Crazy Bubble Tea app exposes user data via parameter enumeration
CVE-2025-14317 in Crazy Bubble Tea mobile app allows authenticated attackers to enumerate and access other users' personal information via unvalidated loyaltyGuestId parameter.
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What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT Polska coordinated the disclosure of CVE-2025-14317, an Insecure Direct Object Reference (IDOR) vulnerability in the Crazy Bubble Tea mobile application developed by Emaintenance. The flaw allows any authenticated user to enumerate the loyaltyGuestId parameter and retrieve personal information belonging to other users. The server fails to validate whether the requesting user has proper authorization to access the requested data.
The vulnerability was responsibly disclosed by researcher Tobiasz "Palidon" Kostrzewa. Emaintenance addressed the issue in version 915 for Android and version 7.4.1 for iOS.
This represents a privacy breach affecting customers of the Crazy Bubble Tea loyalty program. While exploitation requires authenticated access, the enumeration capability could enable mass harvesting of customer personal data. Organizations using customer loyalty applications should verify proper access controls are implemented server-side.
Mentioned in this report
Source reporting: https://cert.pl/en/posts/2026/01/CVE-2025-14317
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