CVE-2025-14317 is a vulnerability classified under CWE-359 (Exposure of Private Personal Information to an Unauthorized Actor) found in the Emaintenance Crazy Bubble Tea mobile application. The issue arises because the server does not enforce proper authorization checks when processing requests containing the loyaltyGuestId parameter. An authenticated attacker can enumerate this parameter to retrieve personal information belonging to other users without possessing the necessary permissions. This vulnerability affects all versions prior to 915 on Android and 7.4.1 on iOS, where the flaw was fixed. The vulnerability’s CVSS 4.0 score is 7.1, indicating high severity, with an attack vector of network (remote exploitation), low attack complexity, no privileges required beyond authentication, and no user interaction needed. The vulnerability impacts confidentiality severely, as unauthorized actors can access sensitive personal data, but it does not affect integrity or availability. No known exploits have been reported in the wild to date. The root cause is insufficient server-side authorization validation, which allows attackers to bypass access controls by manipulating the loyaltyGuestId parameter. This type of vulnerability is particularly concerning in mobile applications that handle personal user data, especially in loyalty or rewards programs where personal and transactional information is stored. The fix involves updating the application to the patched versions and ensuring robust authorization checks on the server side to validate that the requesting user has the right to access the requested data. Organizations using this app should audit their user data access controls and monitor for suspicious enumeration activity.

The primary impact of CVE-2025-14317 is the unauthorized disclosure of personal user information, which compromises confidentiality. For European organizations, this can lead to violations of GDPR and other data protection regulations, resulting in legal penalties and reputational damage. The exposure of personal data can facilitate identity theft, targeted phishing, and other social engineering attacks. Since the vulnerability requires only authentication but no elevated privileges or user interaction, it is relatively easy for attackers with valid accounts to exploit. This increases the risk of insider threats or credential stuffing attacks leading to data breaches. The vulnerability does not affect system integrity or availability, so operational disruption is unlikely. However, the loss of customer trust and potential regulatory fines could have significant financial and strategic consequences. Organizations relying on the Crazy Bubble Tea app for customer engagement or loyalty programs must prioritize remediation to protect user privacy and comply with European data protection laws.

1. Immediately update the Crazy Bubble Tea mobile application to version 915 (Android) or 7.4.1 (iOS) or later to apply the official fix. 2. Conduct a thorough audit of server-side authorization logic to ensure that all requests for user data validate the requesting user's permissions against the requested resource. 3. Implement rate limiting and anomaly detection on the loyaltyGuestId parameter to detect and block enumeration attempts. 4. Enforce strong authentication mechanisms and monitor for suspicious login patterns that could indicate credential abuse. 5. Review and enhance logging and alerting around access to personal data endpoints to enable rapid detection of unauthorized access. 6. Educate users about the importance of securing their credentials to reduce the risk of account compromise. 7. For organizations managing their own backend integrations with the app, ensure that API endpoints enforce strict access control policies. 8. Regularly test the application and backend services for similar authorization bypass vulnerabilities using automated security scanning and manual penetration testing.