Pixa Bank 2.0 Unauthenticated SQL Injection Vulnerability

Pixa Bank 2.0 is susceptible to an SQL injection vulnerability (CVE-2026-49491) that enables unauthenticated attackers to extract sensitive information from the database. This vulnerability is present due to insufficient input validation on the ‘rib’ parameter. By crafting malicious POST requests to the agence-ajax.php endpoint, attackers can inject SQL code, specifically using UNION-based SQL injection techniques, to bypass security measures and directly query the database. Successful exploitation allows retrieval of user details, including names, email addresses, and phone numbers, which can then be used for identity theft, phishing campaigns, or further malicious activities. The vulnerability was reported in June 2026 and affects version 2.0 of Pixa Bank.

Attack Chain

1. The attacker identifies the agence-ajax.php endpoint.
2. The attacker crafts a POST request to agence-ajax.php with a malicious SQL payload within the rib parameter.
3. The SQL payload uses UNION-based techniques to extract data from other tables in the database.
4. The server processes the request without proper sanitization of the ‘rib’ parameter.
5. The database executes the injected SQL code.
6. Sensitive data, such as user names, email addresses, and phone numbers, is retrieved from the database.
7. The extracted data is included in the response from the server.
8. The attacker parses the response to obtain the sensitive information.

Impact

Successful exploitation of this SQL injection vulnerability can lead to the compromise of sensitive user data, including names, email addresses, and phone numbers. The retrieved information can be used for identity theft, phishing attacks, or sold on the dark web. The vulnerability affects all installations of Pixa Bank 2.0 that have not been patched, potentially impacting a large number of users and financial transactions. The CVSS v3.1 score of 8.2 highlights the high severity of this vulnerability, emphasizing the potential for significant data breaches and reputational damage.

Recommendation

• Deploy the Sigma rule Detect Pixa Bank SQL Injection Attempts to identify and block malicious requests targeting the agence-ajax.php endpoint (Sigma rule).
• Apply input validation and sanitization to the ‘rib’ parameter in agence-ajax.php to prevent SQL injection (CVE-2026-49491).
• Monitor web server logs for POST requests to agence-ajax.php containing SQL keywords such as UNION, SELECT, INSERT, UPDATE, or DELETE in the rib parameter (webserver logs).
• Implement parameterized queries or prepared statements to prevent SQL injection by ensuring that user-supplied data is treated as data, not as executable code (CVE-2026-49491).