CVE-2026-78260 in Epayco Plugin
Summary
by MITRE • 08/27/2026
Unauthenticated SQL Injection in Epayco <= 8.4.6 versions.
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Analysis
by VulDB Data Team • 08/27/2026
The vulnerability identified as an unauthenticated SQL injection flaw within Epayco payment gateway integration plugins, specifically affecting versions up to and including 8.4.6, represents a critical security risk for websites relying on this software for transaction processing. This type of vulnerability arises when the application fails to properly sanitize user-supplied input before incorporating it into backend database queries. In the context of Epayco, attackers can exploit specific endpoints or parameters that handle payment data without requiring valid authentication credentials. The absence of an access control check allows any remote actor on the internet to interact directly with the vulnerable functionality, bypassing standard security boundaries designed to restrict such interactions to authorized users only.
From a technical perspective, the core issue lies in the improper handling of input variables passed through HTTP requests. When these inputs are concatenated directly into Structured Query Language statements without adequate escaping or parameterization, they allow for the injection of arbitrary SQL commands. This flaw aligns with Common Weakness Enumeration identifier CWE-89, which classifies Improper Neutralization of Special Elements used in an SQL Command. The attacker can manipulate query logic to extract sensitive data from the database, modify existing records, or potentially execute administrative operations depending on the privileges assigned to the database user account running the web application. This is further categorized under MITRE ATT&CK technique T1190, which describes Exploit Public-Facing Application, highlighting how external-facing services are targeted for initial access and data exfiltration.
The operational impact of this vulnerability is severe due to its unauthenticated nature. Since no login or session validation is required, the attack surface is maximized, allowing automated scanning tools to discover and exploit the flaw rapidly across thousands of instances globally. Successful exploitation can lead to a complete compromise of the underlying database, resulting in the exposure of customer personal identifiable information, credit card details stored for future transactions, and administrative credentials. Beyond data theft, an attacker could alter transaction records, leading to financial discrepancies or fraudulent activities that undermine trust in the payment platform. The lack of authentication means there is no audit trail linking the attack to a specific user identity initially, complicating forensic analysis and incident response efforts unless additional logging mechanisms are in place.
Mitigation strategies must prioritize immediate remediation through software updates. Administrators should upgrade Epayco plugins to version 8.4.7 or later where this vulnerability has been patched by implementing proper input validation and prepared statements for all database interactions. In scenarios where an update cannot be applied immediately, network-level controls such as Web Application Firewalls can provide temporary protection by detecting and blocking SQL injection patterns in incoming traffic. Additionally, enforcing strict least-privilege principles on the database account used by the application ensures that even if exploitation occurs, the attacker's ability to modify critical system structures or access unrelated data is significantly restricted. Regular security audits and code reviews focusing on dynamic query construction are essential preventive measures against this class of vulnerabilities in future development cycles.