CVE-2025-14317: Crazy Bubble Tea Information Disclosure

CVE-2025-14317 Overview

CVE-2025-14317 is an Insecure Direct Object Reference (IDOR) vulnerability in the Crazy Bubble Tea mobile application that allows authenticated attackers to access personal information of other users. The vulnerability exists because the server fails to verify permissions when the loyaltyGuestId parameter is enumerated, enabling unauthorized data access.

Critical Impact

Authenticated attackers can enumerate the loyaltyGuestId parameter to retrieve personal information belonging to other users, resulting in exposure of sensitive personal data due to missing authorization checks.

Affected Products

• Crazy Bubble Tea Mobile Application (Android) - versions prior to 915
• Crazy Bubble Tea Mobile Application (iOS) - versions prior to 7.4.1

Discovery Timeline

• 2026-01-14 - CVE CVE-2025-14317 published to NVD
• 2026-01-14 - Last updated in NVD database

Technical Details for CVE-2025-14317

Vulnerability Analysis

This vulnerability falls under CWE-359 (Exposure of Private Personal Information to an Unauthorized Actor). The Crazy Bubble Tea mobile application exposes an API endpoint that accepts a loyaltyGuestId parameter to retrieve user information. Due to missing authorization checks on the server side, an authenticated user can manipulate this parameter to access personal information of any other user in the system.

The attack requires only low-privilege authenticated access and can be performed remotely over the network. The vulnerability has no impact on data integrity or system availability, but poses a significant threat to data confidentiality as attackers can systematically harvest personal information from the entire user database through simple parameter enumeration.

Root Cause

The root cause of this vulnerability is the absence of proper authorization validation on the server-side API endpoint. When a request is made with a loyaltyGuestId parameter, the server processes the request and returns user data without verifying whether the authenticated user has permission to access that specific user's information. This is a classic broken access control issue where the application relies on client-side controls or assumes users will only request their own data.

Attack Vector

The attack is conducted over the network by an authenticated user who manipulates the loyaltyGuestId parameter in API requests. An attacker can systematically enumerate user IDs by incrementing or iterating through possible values, retrieving personal information for each valid ID discovered. Since no user interaction is required and the attack complexity is low, this vulnerability can be easily automated to extract data at scale.

The exploitation workflow involves:

1. Authenticating to the Crazy Bubble Tea mobile application with valid credentials
2. Intercepting API requests that include the loyaltyGuestId parameter
3. Modifying the parameter value to reference other users' IDs
4. Receiving personal information belonging to the targeted users without authorization

Detection Methods for CVE-2025-14317

Indicators of Compromise

• Unusual patterns of API requests with sequential or randomized loyaltyGuestId values from a single authenticated session
• High-volume requests to user data endpoints from individual accounts
• Access logs showing repeated requests to retrieve different user profiles in rapid succession
• Anomalous data access patterns where a single user account queries many different loyalty guest records

Detection Strategies

• Implement rate limiting and anomaly detection on API endpoints that accept user identifiers
• Monitor for enumeration patterns in web application firewall (WAF) logs, looking for sequential parameter values
• Deploy API security solutions that can detect and alert on IDOR attack patterns
• Review access logs for accounts making requests for data outside their normal access scope

Monitoring Recommendations

• Enable detailed logging of all API requests including the authenticated user, requested loyaltyGuestId, and response status
• Set up alerts for accounts that request more than a threshold number of unique user records within a time window
• Implement user behavior analytics to baseline normal access patterns and detect deviations
• Regularly audit API endpoint access patterns as part of security operations

How to Mitigate CVE-2025-14317

Immediate Actions Required

• Upgrade Crazy Bubble Tea mobile application to version 915 or later on Android devices
• Upgrade Crazy Bubble Tea mobile application to version 7.4.1 or later on iOS devices
• Review access logs for evidence of exploitation or unauthorized data access prior to patching
• Consider notifying affected users if evidence of data breach is discovered

Patch Information

The vendor has addressed this vulnerability in version 915 for Android and version 7.4.1 for iOS. These versions implement proper server-side authorization checks to ensure users can only access their own personal information. Organizations and users should update to these patched versions immediately.

For additional technical details, refer to the CERT CVE-2025-14317 Advisory and the Crazy Bubble Application Overview.

Workarounds

• If immediate patching is not possible, consider implementing additional server-side access controls at the API gateway or WAF level
• Restrict API access to known good IP ranges or implement additional authentication factors for sensitive endpoints
• Temporarily disable the affected API endpoint if the business impact is acceptable
• Implement rate limiting on the affected endpoint to reduce the impact of enumeration attacks

# Example: Rate limiting configuration for nginx (adjust path and limits as appropriate)
# Add to nginx configuration for the affected API endpoint
location /api/loyalty/guest {
    limit_req zone=loyalty_api burst=5 nodelay;
    limit_req_status 429;
    # ... existing proxy/backend configuration
}