SQL Injection Vulnerability in Easy Blog Site 1.0

A SQL injection vulnerability has been identified in code-projects Easy Blog Site 1.0, specifically affecting the login.php file. This vulnerability allows a remote attacker to inject malicious SQL code through the username and password parameters. The vulnerability, identified as CVE-2026-5646, stems from improper sanitization of user-supplied input, potentially allowing attackers to bypass authentication or extract sensitive data from the application’s database. The exploit has been publicly disclosed, increasing the risk of widespread exploitation. The scope of the impact depends on the database privileges of the account used by the web application.

Attack Chain

1. Attacker identifies the login page (login.php) of the Easy Blog Site 1.0 application.
2. Attacker crafts a malicious SQL injection payload embedded within the username or password parameter.
3. The attacker sends a crafted HTTP POST request to login.php, including the SQL injection payload.
4. The application’s login.php script fails to properly sanitize the username or password input.
5. The unsanitized input is passed directly into an SQL query executed against the database.
6. The injected SQL code is executed by the database server, modifying the query’s behavior.
7. Depending on the injected SQL, the attacker may bypass authentication or extract data.
8. The attacker gains unauthorized access to the application or exfiltrates sensitive data.

Impact

Successful exploitation of this SQL injection vulnerability (CVE-2026-5646) in Easy Blog Site 1.0 can lead to a range of consequences, including unauthorized access to sensitive user data, modification of application data, or complete compromise of the database server. Given the public disclosure of the exploit, vulnerable installations are at high risk of being targeted by attackers seeking to gain unauthorized access or steal data. The impact is higher if the database user has elevated privileges.

Recommendation

• Inspect web server logs for suspicious POST requests to login.php containing SQL syntax within the username or password parameters to identify potential exploitation attempts (see example rule below).
• Apply input validation and sanitization to the username and password parameters in the login.php file to prevent SQL injection, addressing CVE-2026-5646.
• Implement parameterized queries or prepared statements in the application’s database interactions to prevent SQL injection attacks.
• Monitor database logs for anomalous SQL queries originating from the web application to detect potential breaches.
• Deploy a Web Application Firewall (WAF) rule to block requests containing common SQL injection payloads targeting login.php.