CVE-2025-10100 Overview
A SQL Injection vulnerability has been identified in SourceCodester Simple Forum Discussion System version 1.0. The vulnerability exists in the /admin_class.php file when processing the action=login request. Manipulation of the Username argument allows attackers to inject malicious SQL statements, potentially leading to unauthorized access to the underlying database. The vulnerability is remotely exploitable, and a public exploit has been disclosed, increasing the risk of active exploitation.
Critical Impact
Unauthenticated attackers can remotely exploit this SQL Injection vulnerability to bypass authentication, extract sensitive database contents, modify data, or potentially gain further access to the underlying system.
Affected Products
- SourceCodester Simple Forum/Discussion System 1.0
- WordPress deployments using Simple Forum/Discussion System plugin
Discovery Timeline
- September 8, 2025 - CVE-2025-10100 published to NVD
- September 12, 2025 - Last updated in NVD database
Technical Details for CVE-2025-10100
Vulnerability Analysis
This SQL Injection vulnerability occurs in the authentication mechanism of the Simple Forum Discussion System. The admin_class.php file fails to properly sanitize user-supplied input in the Username parameter before incorporating it into SQL queries. This allows attackers to manipulate the query logic by injecting specially crafted SQL syntax through the login form.
The vulnerability is classified under both CWE-89 (SQL Injection) and CWE-74 (Injection), indicating a fundamental failure to properly neutralize special elements used in SQL commands. Since the vulnerability exists in the login function, successful exploitation can lead to authentication bypass, allowing unauthorized administrative access without valid credentials.
The network-based attack vector with no authentication requirements means any remote attacker can attempt exploitation without prior access to the system. The publicly available exploit further increases the likelihood of opportunistic attacks against vulnerable installations.
Root Cause
The root cause of this vulnerability is improper input validation and lack of parameterized queries in the authentication handler. The Username parameter value is directly concatenated into SQL queries without proper sanitization or use of prepared statements. This classic SQL Injection pattern allows attackers to break out of the intended query structure and inject arbitrary SQL commands.
Attack Vector
The attack can be initiated remotely through the network by sending a malicious HTTP request to the /admin_class.php endpoint with the action=login parameter. An attacker crafts a specially formatted Username value containing SQL metacharacters and injection payloads to manipulate the underlying database query.
Successful exploitation may allow attackers to:
- Bypass authentication and gain administrative access
- Extract sensitive data from the database including user credentials
- Modify or delete database records
- Potentially escalate to remote code execution depending on database configuration
For technical details and proof-of-concept information, refer to the GitHub CVE Issue Discussion and the VulDB entry.
Detection Methods for CVE-2025-10100
Indicators of Compromise
- Unusual SQL syntax patterns in web server access logs targeting /admin_class.php
- Multiple failed or unusual login attempts with malformed username values
- Database error messages appearing in application logs or responses
- Unexpected database queries or data extraction patterns in database logs
Detection Strategies
- Monitor web application firewall (WAF) logs for SQL injection signature matches on login endpoints
- Implement intrusion detection rules to identify common SQL injection patterns in HTTP POST parameters
- Review application logs for authentication anomalies and failed login attempts with special characters
- Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
Monitoring Recommendations
- Enable detailed logging for the /admin_class.php endpoint and authentication-related functions
- Configure alerting for SQL error messages in application responses
- Monitor database query logs for injection patterns such as UNION SELECT, OR 1=1, and comment sequences
- Implement rate limiting on authentication endpoints to slow brute-force and injection attempts
How to Mitigate CVE-2025-10100
Immediate Actions Required
- Remove or disable the Simple Forum Discussion System if not critically needed
- Implement web application firewall (WAF) rules to block SQL injection patterns on the affected endpoint
- Restrict network access to the administrative interface using IP allowlisting
- Review database access logs for signs of prior exploitation
Patch Information
At the time of publication, no official vendor patch has been released for this vulnerability. Organizations using SourceCodester Simple Forum Discussion System 1.0 should monitor the SourceCodester website for security updates and consider the workarounds below until a patch is available.
For additional technical details and tracking information, refer to the VulDB entry.
Workarounds
- Implement prepared statements and parameterized queries in the admin_class.php file if modifying source code is feasible
- Deploy a WAF with SQL injection protection rules in front of the application
- Restrict access to the administrative login page to trusted IP ranges only
- Consider replacing the vulnerable application with a more actively maintained alternative
# Example WAF rule to block common SQL injection patterns (ModSecurity)
SecRule ARGS:Username "@rx (?i)(\bunion\b.*\bselect\b|'.*(\bor\b|\band\b).*'|--|\#|\/\*)" \
"id:100001,phase:2,deny,status:403,log,msg:'SQL Injection attempt blocked on login'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
