CVE-2023-50026 is a critical SQL injection vulnerability affecting the Presta Monster "Multi Accessories Pro" (hsmultiaccessoriespro) module used in PrestaShop e-commerce platforms, specifically versions 5.1.1 and earlier. The vulnerability arises in the method HsAccessoriesGroupProductAbstract::getAccessoriesByIdProducts(), which fails to properly sanitize user-supplied input before incorporating it into SQL queries. This flaw allows remote attackers to execute arbitrary SQL commands without authentication or user interaction, enabling them to escalate privileges and extract sensitive information from the underlying database. Given the CVSS 3.1 base score of 9.8, this vulnerability poses a critical risk impacting confidentiality, integrity, and availability of affected systems. Exploitation could lead to unauthorized data disclosure, modification, or deletion, potentially compromising customer data, order information, and administrative credentials. Although no public exploits have been reported yet, the ease of exploitation combined with the high impact makes this a significant threat to PrestaShop installations using the vulnerable module. The vulnerability is categorized under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), a common and dangerous injection flaw. Since PrestaShop is widely used by online retailers, this vulnerability could be leveraged to disrupt e-commerce operations or facilitate further attacks such as privilege escalation or persistent backdoors.

For European organizations operating e-commerce websites on PrestaShop with the vulnerable Multi Accessories Pro module, this vulnerability could lead to severe consequences. Attackers could gain unauthorized access to sensitive customer data including personal and payment information, violating GDPR requirements and potentially resulting in heavy fines and reputational damage. The integrity of product and order data could be compromised, disrupting business operations and causing financial losses. Availability may also be affected if attackers manipulate or delete critical database records. Given the critical severity and remote exploitability without authentication, attackers could target multiple organizations en masse, increasing the risk of widespread data breaches within the European e-commerce sector. Small and medium-sized enterprises (SMEs), which often rely on third-party modules and may have limited security resources, are particularly at risk. Additionally, compromised systems could be used as pivot points for further attacks against supply chains or customers, amplifying the threat impact across the region.

1. Immediate patching or updating: Organizations should verify if an official patch or updated version of the Multi Accessories Pro module is available from the vendor or Presta Monster and apply it without delay. 2. Input validation and sanitization: Until a patch is applied, implement web application firewall (WAF) rules to detect and block SQL injection attempts targeting the vulnerable method. 3. Database access controls: Restrict database user permissions used by the PrestaShop application to the minimum necessary, limiting the potential damage from SQL injection exploits. 4. Code review and hardening: Conduct a thorough security review of all third-party modules, especially those handling user input, to identify and remediate similar injection flaws. 5. Monitoring and incident response: Enable detailed logging and monitor for unusual database queries or access patterns indicative of exploitation attempts. Prepare incident response plans to quickly contain and remediate breaches. 6. Backup and recovery: Maintain regular, secure backups of databases and application data to enable rapid restoration in case of data corruption or deletion. 7. Vendor engagement: Engage with module vendors to encourage timely security updates and transparency about vulnerabilities.