CVE-2026-18592 in osCommerce
Summary
by MITRE • 08/03/2026
A security flaw has been discovered in osCommerce 4.14.63493. Affected by this issue is the function EmailController of the file app/lib/backend/controllers/EmailController.php of the component Email Template Configuration. Performing a manipulation of the argument email_templates_key results in sql injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 08/03/2026
The security vulnerability identified in osCommerce 4.14.63493 represents a critical sql injection flaw within the Email Template Configuration component, specifically affecting the EmailController function located in app/lib/backend/controllers/EmailController.php. This vulnerability stems from inadequate input validation and sanitization of the email_templates_key argument, creating an exploitable condition that allows malicious actors to manipulate database queries through crafted input parameters. The flaw exists within a backend controller that manages email template configurations, making it particularly dangerous as it operates within the administrative functionality of the e-commerce platform.
The technical implementation of this vulnerability demonstrates a classic sql injection attack vector where user-supplied data flows directly into sql query construction without proper sanitization or parameterization. When an attacker manipulates the email_templates_key argument, they can inject malicious sql code that executes within the database context, potentially allowing for data extraction, modification, or deletion. The remote exploitability of this vulnerability means that attackers do not require local system access or authentication to the application, significantly expanding the attack surface and making the flaw particularly dangerous for publicly accessible web applications.
The operational impact of this vulnerability extends beyond simple data compromise, as it provides attackers with potential persistence mechanisms and escalation paths within the affected system. An attacker could leverage this sql injection to extract sensitive customer information, modify product catalogs, manipulate order processing, or even gain unauthorized access to administrative functions. The lack of vendor response following early disclosure attempts suggests a critical gap in security support for this version of osCommerce, leaving users exposed to potential exploitation without official patches or mitigations. This vulnerability falls under the CWE-89 category for sql injection and aligns with attack patterns documented in the mitre att&ck framework under initial access and privilege escalation techniques.
Mitigation strategies should prioritize immediate implementation of input validation measures including parameterized queries, proper escaping of user inputs, and comprehensive sanitization of all arguments passed to database functions. Organizations should implement web application firewalls and input filtering mechanisms to detect and block malicious sql injection attempts targeting the specific email_templates_key parameter. The recommended approach includes upgrading to a patched version of osCommerce if available, implementing strict access controls for administrative functions, and conducting thorough security assessments of all backend controllers that handle user-supplied data. Additionally, monitoring database logs for unusual query patterns and implementing comprehensive backup strategies can help detect and respond to exploitation attempts effectively.