CVE-2026-57422 in Bopo Plugin
Summary
by MITRE • 07/13/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in VillaTheme Bopo – WooCommerce Product Bundle Builder bopo-woo-product-bundle-builder allows Reflected XSS.This issue affects Bopo – WooCommerce Product Bundle Builder: from n/a through <= 1.2.0.
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Analysis
by VulDB Data Team • 07/13/2026
Cross-site scripting vulnerabilities represent one of the most prevalent and dangerous web application security flaws, with the potential to compromise user sessions and execute malicious code within victim browsers. The vulnerability in VillaTheme Bopo – WooCommerce Product Bundle Builder constitutes a reflected cross-site scripting issue that occurs during web page generation when input parameters are inadequately sanitized. This particular weakness allows attackers to inject malicious scripts into web pages viewed by other users, creating a persistent threat vector that can be exploited through various attack vectors including email links, social media posts, or compromised websites.
The technical flaw resides in the improper neutralization of input data during the dynamic generation of web pages within the WooCommerce product bundle builder plugin. When user-supplied parameters are directly incorporated into HTML output without proper sanitization or encoding, malicious scripts can be executed in the context of the victim's browser session. This reflected XSS vulnerability specifically affects versions of the Bopo plugin from the initial release through version 1.2.0, indicating that the developers have not yet addressed this critical security gap in their code implementation. The vulnerability manifests when an attacker crafts a malicious URL containing script payloads that get reflected back to users who click on the link, executing the injected code in their browser environment.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to hijack user sessions, steal sensitive information, manipulate web page content, or redirect users to malicious websites. In the context of an e-commerce platform like WooCommerce, where user authentication and transaction data are paramount, this vulnerability could allow threat actors to access customer accounts, view order details, modify product configurations, or even execute unauthorized transactions. The reflected nature of the vulnerability means that attackers need only convince victims to click on crafted links rather than requiring persistent server-side exploitation, making it particularly dangerous for online retailers who depend on user trust and secure transactions.
Mitigation strategies should focus on implementing robust input validation and output encoding mechanisms throughout the application codebase. Security measures must include proper sanitization of all user inputs before they are processed or displayed in web pages, utilizing context-appropriate encoding techniques such as HTML entity encoding for content rendered within HTML contexts. Organizations should also implement Content Security Policy headers to limit script execution sources and employ regular security scanning tools to identify similar vulnerabilities across their web applications. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and follows ATT&CK technique T1566 related to social engineering through malicious links, emphasizing the need for comprehensive defensive measures that address both the immediate code-level issue and broader security posture improvements.
This vulnerability demonstrates the critical importance of input validation in web application development and highlights how seemingly minor oversights can create substantial security risks. The fact that this issue affects a widely-used WooCommerce plugin underscores the need for continuous security assessment of third-party components and regular updates to address known vulnerabilities. Organizations should implement comprehensive security testing procedures including dynamic application security testing and manual penetration testing to identify similar flaws before they can be exploited by malicious actors in real-world scenarios.