Overview
This blog post details the critical SQL Injection vulnerability found in CloudClassroom-PHP-Project v1.0, identified as CVE-2025-26198. This vulnerability is particularly concerning due to its high severity score of 9.8 and its potential to lead to system compromise or data leakage. It affects anyone using the CloudClassroom-PHP-Project v1.0 and is of significant concern to IT administrators, web developers, and other cybersecurity professionals due to its potential to bypass authentication mechanisms and expose sensitive backend data.
Vulnerability Summary
CVE ID: CVE-2025-26198
Severity: Critical (CVSS score: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage
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Product | Affected Versions
CloudClassroom-PHP-Project | v1.0
How the Exploit Works
The vulnerability is present in the loginlinkadmin.php component of the CloudClassroom-PHP-Project application. The flaw originates from the application’s failure to sanitize user-supplied input in the admin login form before incorporating it into SQL queries. This failure allows unauthenticated attackers to inject arbitrary SQL payloads and bypass authentication. By supplying specially crafted input in the username field, such as ‘ OR ‘1’=’1, an attacker can effectively compromise the login mechanism and potentially gain access to sensitive backend data.
Conceptual Example Code
The vulnerability can be exploited with a simple HTTP POST request to the admin login form. Here is a conceptual example of how the exploit might work:
POST /loginlinkadmin.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
username=' OR '1'='1&password=anythingIn this example, the malicious payload ‘ OR ‘1’=’1 is inserted into the username field. This input effectively changes the SQL query into a statement that is always true, thereby bypassing the need for a correct password and gaining unauthorized administrative access.
It’s crucial to note that this is a conceptual example and might require modifications based on the specific configurations and conditions of the target system. Always adhere to ethical guidelines when testing for vulnerabilities.
Mitigation Guidance
The best mitigation strategy for this vulnerability is to apply the latest vendor patch as soon as it becomes available. In the meantime, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block SQL Injection attempts. It’s also advisable to modify the application code to properly sanitize user-supplied input, which can prevent similar vulnerabilities in the future.