CVE-2026-49491: Unauthenticated SQL Injection in Pixa Bank 2.0

Technical summary

CVE-2026-49491 is an unauthenticated SQL injection vulnerability in Pixa Bank 2.0 affecting the 'rib' parameter on the agence-ajax.php endpoint. The vulnerability permits UNION-based SQL injection attacks via POST requests, enabling attackers to bypass authentication controls and exfiltrate arbitrary data from the application database. The CVSS 3.1 vector (8.2/HIGH) reflects network accessibility, low attack complexity, no privilege requirement, and confidentiality impact; integrity impact is limited to the scope of the injected query results.

Business impact

Compromise of customer personally identifiable information (names, emails, phone numbers) creates immediate regulatory compliance exposure under data protection regulations, reputational harm, and potential liability for breach notification. For a financial institution, unauthorized data extraction undermines customer trust and triggers mandatory incident response, forensic investigation, and potential regulatory fines. The unauthenticated nature of the attack means threat actors can initiate exploitation from any network location without insider access or credential compromise.

Affected systems

Pixa Bank version 2.0 is affected. Organizations should verify whether they operate this specific software version in production environments, including any isolated or legacy deployments. No patch version information is available in current advisories; verify the latest available version directly with the vendor.

Exploitability

Exploitability is high. The attack requires only network access and the ability to craft HTTP POST requests; no special tools or advanced techniques are necessary beyond standard SQL injection methodology. The absence of authentication requirements and the low barrier to crafting UNION-based payloads mean this vulnerability can be weaponized rapidly. However, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog, suggesting active in-the-wild exploitation has not yet been confirmed at scale.

Remediation

Immediately contact your Pixa Bank vendor for patch availability and apply the latest security update to all affected instances. If patching is delayed, implement network-level controls such as Web Application Firewall (WAF) rules to block SQL injection patterns in the agence-ajax.php endpoint, specifically monitoring for UNION keyword sequences and common SQL metacharacters in the 'rib' parameter. Consider temporarily restricting access to the affected endpoint to trusted networks pending patch deployment.

Patch guidance

Check with your Pixa Bank vendor for available patches released after June 1, 2026 (the CVE publication date). Apply patches to all production and non-production instances running version 2.0. Test patches in a staging environment first to confirm compatibility and functionality. Document the patch version applied and verify successful deployment through vendor-recommended validation steps.

Detection guidance

Monitor HTTP POST requests to agence-ajax.php for suspicious patterns in the 'rib' parameter, including SQL keywords (SELECT, UNION, WHERE, AND, OR), comment syntax (--,%23), and encoding variations. Log all requests to this endpoint regardless of method. Correlate failed queries and database error messages with web server access logs. Baseline legitimate 'rib' parameter usage and alert on deviations. Implement database activity monitoring (DAM) to detect unusual SELECT queries targeting user tables containing PII.

Why prioritize this

This vulnerability should be prioritized for immediate remediation due to its HIGH CVSS score (8.2), unauthenticated attack vector, direct exposure of customer PII, and the financial services context where data breaches trigger regulatory consequences. Although not yet in CISA's KEV catalog, the simplicity of exploitation and sensitive data at risk make it an attractive target. Organizations running Pixa Bank 2.0 should treat this as urgent.

Risk score, explained

The CVSS 3.1 score of 8.2 (HIGH) reflects: network-based attack vector (AV:N) requiring no authentication (PR:N) and no user interaction (UI:N), low attack complexity (AC:L), unchanged scope (S:U), and high confidentiality impact (C:H) from direct PII extraction. Integrity impact is rated as low (I:L) because the attack primarily exfiltrates data rather than modifying records, though injected queries could theoretically alter data. Availability is not impacted (A:N). The score appropriately captures the severity for a financial institution storing sensitive customer information.

Frequently asked questions