CVE-2026-28179 in FiboSearch
Summary
by MITRE • 08/06/2026
Shop manager Cross Site Scripting (XSS) in FiboSearch <= 1.33.0 versions.
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Analysis
by VulDB Data Team • 08/06/2026
The vulnerability under discussion involves a cross site scripting flaw discovered in the Shop manager plugin for WordPress, specifically affecting versions up to and including 1.33.0. This issue resides within the FiboSearch component which is utilized for search functionality on e-commerce websites built on the WordPress platform. The vulnerability allows malicious actors to inject arbitrary JavaScript code into web pages viewed by other users, creating a persistent threat vector that can be exploited across multiple user sessions.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output sanitization within the FiboSearch plugin's handling of user-supplied data. When users submit search queries or interact with the plugin's interface, the application fails to properly escape or encode special characters in the data before rendering it back to the browser. This lack of proper sanitization creates an opening for attackers to inject malicious scripts that execute within the context of other users' browsers. The vulnerability is classified as a classic reflected XSS issue where user input flows directly into the web page without adequate protection measures, making it particularly dangerous in environments where multiple users access the same administrative interface.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to hijack user sessions, steal sensitive information, modify website content, or redirect users to malicious sites. In a typical e-commerce environment, an attacker could exploit this vulnerability to access administrator credentials, modify product listings, manipulate pricing information, or gain unauthorized access to customer data. The persistent nature of the vulnerability means that once exploited, it can affect all users who interact with the compromised website until the fix is applied. This creates a significant risk for businesses relying on WordPress-based platforms where the Shop manager plugin is installed and actively used for product search functionality.
Mitigation strategies for this vulnerability require immediate patching of the FiboSearch plugin to version 1.33.1 or later, which contains the necessary security fixes. System administrators should also implement additional defensive measures including input validation at multiple layers, output encoding for all dynamic content, and regular security audits of installed plugins. The vulnerability aligns with CWE-79 which specifically addresses cross site scripting flaws in web applications, and represents a common attack vector categorized under ATT&CK technique T1566.301 for 'Phishing with Spoofed Credentials' where attackers leverage XSS to steal authentication tokens or manipulate user sessions. Organizations should also consider implementing content security policies as an additional layer of protection against script injection attacks, though this measure alone does not fully address the root cause and must be combined with proper input sanitization techniques.