CVE-2025-11735 identifies a blind SQL Injection vulnerability in the HUSKY – Products Filter Professional for WooCommerce plugin for WordPress, present in all versions up to and including 1.3.7.1. The vulnerability is due to improper neutralization of special elements in the 'phrase' parameter, which is used in SQL queries without sufficient escaping or prepared statements. This allows unauthenticated attackers to append arbitrary SQL commands to existing queries, enabling them to extract sensitive information from the backend database. The attack vector requires no authentication or user interaction, increasing the risk of automated exploitation. The vulnerability is categorized under CWE-89, indicating a classic SQL Injection flaw. The CVSS v3.1 score is 7.5 (high), reflecting the network attack vector, low attack complexity, no privileges required, no user interaction, and a high impact on confidentiality. Although no public exploits are currently known, the nature of the vulnerability makes it a prime target for attackers seeking to compromise e-commerce data, including customer information and transaction details. The plugin is widely used in WooCommerce environments, which are prevalent in European e-commerce platforms, making this a significant threat to organizations relying on this software for product filtering capabilities.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of sensitive customer and business data stored in WooCommerce databases. Exploitation could lead to unauthorized data disclosure, including customer personal information, payment details, and business intelligence, potentially resulting in regulatory penalties under GDPR. The attack does not affect data integrity or availability directly but can undermine trust and cause reputational damage. E-commerce businesses relying on this plugin may face financial losses due to data breaches and subsequent remediation costs. The ease of exploitation without authentication or user interaction increases the likelihood of automated attacks, especially targeting high-traffic online stores. This vulnerability could also be leveraged as a foothold for further attacks within the network if attackers gain additional access through disclosed data. Given the widespread use of WooCommerce in Europe, the impact could be broad, affecting small to large enterprises engaged in online retail.

Immediate mitigation involves updating the HUSKY – Products Filter Professional for WooCommerce plugin to a patched version once released by the vendor. Until a patch is available, organizations should implement strict input validation and sanitization on the 'phrase' parameter at the web application level. Deploying a Web Application Firewall (WAF) with custom rules to detect and block SQL Injection payloads targeting this parameter can provide effective temporary protection. Monitoring web server logs for suspicious query patterns related to the 'phrase' parameter is recommended to detect potential exploitation attempts. Additionally, restricting database user permissions to the minimum necessary can limit the impact of a successful injection. Organizations should also conduct security audits of their WooCommerce environments to identify other potential injection points and ensure overall plugin hygiene. Regular backups and incident response plans should be updated to prepare for potential data breaches stemming from this vulnerability.