CVE-2026-49491 Overview
CVE-2026-49491 is an SQL injection vulnerability [CWE-89] in Pixa Bank 2.0. The flaw resides in the agence-ajax.php endpoint, which fails to sanitize the rib parameter before passing it to a database query. Unauthenticated attackers can submit POST requests containing UNION-based SQL payloads to extract sensitive records from the backend database. Disclosed information includes user names, email addresses, and phone numbers. The vulnerability requires no authentication or user interaction and is exploitable over the network.
Critical Impact
Unauthenticated remote attackers can extract personally identifiable information from the Pixa Bank database by injecting SQL into the rib parameter of agence-ajax.php.
Affected Products
- Pixa Bank 2.0 (Pixa Studio)
- agence-ajax.php API endpoint
- Backend database serving user account records
Discovery Timeline
- 2026-06-01 - CVE-2026-49491 published to NVD
- 2026-06-02 - Last updated in NVD database
Technical Details for CVE-2026-49491
Vulnerability Analysis
The vulnerability is a classic SQL injection [CWE-89] affecting the agence-ajax.php endpoint of Pixa Bank 2.0. The application incorporates user-controlled input from the rib POST parameter directly into a SQL statement without parameterization or sanitization. Attackers append UNION SELECT payloads to the rib value, causing the database to return data from arbitrary tables alongside the original query results.
Successful exploitation discloses confidential customer data including full names, email addresses, and phone numbers. Because the endpoint is reachable without authentication, any network-positioned attacker can issue the malicious POST request. The bug carries elevated risk because banking applications typically store regulated personal and financial data.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command. The agence-ajax.php handler concatenates the rib parameter into a query string instead of using prepared statements or parameter binding. No input filtering, type enforcement, or allow-listing is applied before the value reaches the database driver.
Attack Vector
The attack vector is network-based. An attacker sends a crafted POST request to agence-ajax.php containing a UNION-based SQL injection payload in the rib field. The database executes the appended query and returns sensitive table contents within the HTTP response. Refer to the VulnCheck Advisory: Pixa Bank SQL Injection and Packet Storm File ID #220748 for proof-of-concept details.
Detection Methods for CVE-2026-49491
Indicators of Compromise
- POST requests to agence-ajax.php containing SQL keywords such as UNION, SELECT, --, 0x, or information_schema within the rib parameter.
- Web server access logs showing unusually long rib parameter values or encoded SQL syntax.
- Database query logs containing UNION-based statements originating from the web application service account.
- Unexpected outbound HTTP responses containing email addresses, phone numbers, or other PII patterns from the agence-ajax.php endpoint.
Detection Strategies
- Deploy Web Application Firewall (WAF) rules that flag SQL metacharacters and UNION clauses in POST bodies targeting agence-ajax.php.
- Enable database query logging and alert on UNION SELECT statements issued by the application user.
- Correlate access log anomalies, such as repeated 200-response queries with abnormally large response bodies, with database query patterns.
Monitoring Recommendations
- Monitor HTTP request rates and payload sizes against agence-ajax.php for sudden spikes from individual source IP addresses.
- Alert on database errors referencing syntax failures, which often indicate injection probing.
- Track egress data volume from the application tier to identify bulk PII extraction attempts.
How to Mitigate CVE-2026-49491
Immediate Actions Required
- Restrict network access to agence-ajax.php using WAF rules or IP allow-listing until a patched build is deployed.
- Audit the database account used by Pixa Bank and reduce its privileges to the minimum required tables and columns.
- Review web server and database logs for prior exploitation indicators dating back to the application deployment.
- Notify affected users if log analysis confirms data extraction, per applicable breach disclosure requirements.
Patch Information
No vendor patch has been published in the available references at the time of writing. Consult the VulnCheck Advisory: Pixa Bank SQL Injection and the Pixa Studio Homepage for updates from the vendor.
Workarounds
- Replace dynamic query construction in agence-ajax.php with parameterized queries or prepared statements via PDO or MySQLi.
- Apply strict server-side input validation on the rib parameter, enforcing expected length and character class (numeric only).
- Deploy a WAF signature blocking SQL keywords (UNION, SELECT, OR 1=1, --) in requests to the affected endpoint.
- Run the database service account with read-only access to non-sensitive tables where feasible.
# Example ModSecurity rule blocking UNION-based payloads in the rib parameter
SecRule ARGS:rib "@rx (?i)(union(\s|\+)+select|information_schema|--|\bor\b\s+\d+=\d+)" \
"id:1004949,phase:2,deny,status:403,log,msg:'CVE-2026-49491 SQLi attempt on agence-ajax.php'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
