CVE-2024-9378 in YML for Yandex Market Plugin
Summary
by MITRE • 10/02/2024
The YML for Yandex Market plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'page' parameter in all versions up to, and including, 4.7.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 03/08/2025
The vulnerability identified as CVE-2024-9378 affects the YML for Yandex Market plugin for WordPress, a popular e-commerce integration tool that facilitates product listings and market analysis for online retailers. This specific flaw resides within the plugin's handling of user input through the 'page' parameter, which is utilized in the plugin's administrative interfaces and front-end pages. The vulnerability represents a classic reflected cross-site scripting issue that has been classified under CWE-79, which specifically addresses improper neutralization of input during web page generation. The flaw impacts all versions of the plugin up to and including version 4.7.2, indicating a significant attack surface that affects numerous installations across the WordPress ecosystem.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing crafted script code within the 'page' parameter. When an unsuspecting user navigates to this specially crafted link, the malicious script code becomes reflected in the web page response and executes within the user's browser context. This reflects the core principle of reflected XSS attacks where the malicious payload is not stored on the server but is instead reflected back to the user through the server's response. The vulnerability exists because the plugin fails to properly sanitize and escape user input before incorporating it into HTML output, allowing attackers to inject malicious scripts that can execute in the context of the victim's browser session.
The operational impact of this vulnerability is particularly concerning given the plugin's widespread use within WordPress installations. Unauthenticated attackers can leverage this flaw to execute arbitrary scripts in the context of any user who clicks on the malicious link, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The attack requires social engineering to trick users into clicking malicious links, but once executed, the consequences can be severe as attackers can exploit the victim's authenticated session to perform actions they wouldn't normally be authorized to perform. This vulnerability undermines the security model of WordPress installations and could potentially be used as a stepping stone for more advanced attacks within compromised environments.
Mitigation strategies for this vulnerability should focus on immediate patching of the affected plugin to version 4.7.3 or later, which contains the necessary input sanitization and output escaping fixes. Administrators should also implement additional security measures such as input validation at the web application firewall level and regular security auditing of installed plugins. The vulnerability demonstrates the importance of proper input validation and output escaping practices as outlined in the OWASP Top Ten security controls, specifically addressing the need for secure coding practices that prevent injection vulnerabilities. Organizations should also consider implementing content security policies to limit the execution of unauthorized scripts, and conduct regular security assessments to identify and remediate similar vulnerabilities across their WordPress installations. The ATT&CK framework categorizes this vulnerability under T1566, which involves social engineering techniques that can be used to deliver malicious payloads through crafted web links.