Overview
CVE-2025-55128 describes an uncontrolled resource consumption vulnerability found in the userlog-index.php file. This vulnerability allows an attacker with access to the administrative interface to potentially trigger a denial-of-service (DoS) condition. The issue stems from the ability to request an arbitrarily large number of items per page, overwhelming server resources.
This vulnerability was reported by HackerOne community member Dao Hoang Anh (yoyomiski) and publicly disclosed on 2025-11-20.
Technical Details
The userlog-index.php file likely provides a user interface for viewing and managing user activity logs. The vulnerability exists because the application doesn’t properly sanitize or limit the number of items requested per page through the admin interface. An attacker, after authenticating as an administrator (or exploiting an authentication bypass vulnerability – not covered in this CVE), can manipulate the request parameters (e.g., using the limit or per_page parameter) to request a very large number of log entries to be displayed on a single page.
Processing and rendering a large number of database records can consume significant server resources, including CPU, memory, and database connections. Repeated requests with excessive item counts can exhaust these resources, leading to a denial-of-service condition for other users or the entire application.
CVSS Analysis
Currently, a CVSS score is not available (N/A) for CVE-2025-55128. However, given the potential for a denial-of-service, it is likely to be classified as a medium to high severity vulnerability, depending on the ease of exploitation and the impact on the affected system. A full CVSS analysis would be necessary to determine the exact severity.
Possible Impact
The primary impact of CVE-2025-55128 is a denial-of-service (DoS). An attacker could potentially:
- Make the administrative interface unresponsive or unavailable.
- Degrade the performance of the entire application, affecting all users.
- Cause the server to crash or become unstable.
Mitigation or Patch Steps
To mitigate this vulnerability, the following steps should be taken:
- Implement Input Validation and Sanitization: Sanitize and validate the input parameters used to control the number of items displayed per page. Set a reasonable maximum limit on the number of items that can be requested.
- Implement Rate Limiting: Implement rate limiting on the affected endpoint (
userlog-index.php) to prevent an attacker from sending a large number of requests in a short period of time. - Resource Management: Ensure that the server has sufficient resources (CPU, memory) to handle expected traffic.
- Apply Patch (If Available): Check for and apply any official patches released by the vendor to address this vulnerability. This is the most effective solution.
