CVE-2025-58239 in WP Category Dropdown Plugin
Summary
by MITRE • 09/22/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Chandrika Sista WP Category Dropdown allows Stored XSS. This issue affects WP Category Dropdown: from n/a through 1.9.
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Analysis
by VulDB Data Team • 09/22/2025
The CVE-2025-58239 vulnerability represents a critical cross-site scripting flaw in the WP Category Dropdown plugin for WordPress, specifically impacting versions ranging from an unspecified initial version through 1.9. This vulnerability falls under the CWE-79 category, which addresses improper neutralization of input during web page generation, making it a classic stored cross-site scripting vulnerability. The flaw occurs when user input is not properly sanitized before being rendered in web pages, allowing attackers to inject malicious scripts that persist in the application's database and execute whenever the affected page is accessed.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the plugin's handling of category dropdown data. When administrators or users create or modify category dropdown configurations, the plugin fails to properly escape or sanitize the input values before storing them in the WordPress database. This stored data is then retrieved and displayed on subsequent page loads without proper HTML escaping, creating an environment where malicious JavaScript code can be executed in the context of other users' browsers. The vulnerability specifically affects the web page generation process where category dropdown elements are rendered, making it particularly dangerous in administrative interfaces where privileged users might interact with the plugin.
The operational impact of this stored XSS vulnerability is significant, as it allows attackers to execute arbitrary JavaScript code in the browsers of users who view affected pages. An attacker could potentially steal session cookies, perform unauthorized actions on behalf of users, redirect them to malicious sites, or even install malware through browser-based attacks. The vulnerability is particularly concerning in WordPress environments where the plugin is used for administrative category management, as it could enable attackers to escalate privileges or compromise entire WordPress installations. The persistence of the XSS attack through the stored nature of the vulnerability means that once exploited, the malicious code continues to execute for all users until the malicious input is removed from the database.
Mitigation strategies for this vulnerability should include immediate patching of the WP Category Dropdown plugin to version 1.9 or later, which contains the necessary input sanitization and output encoding fixes. Organizations should also implement proper input validation at multiple layers, including server-side validation of all user-provided data before storage and proper HTML escaping before output rendering. Security monitoring should be enhanced to detect unusual patterns in category dropdown configurations, and administrators should regularly audit plugin installations and update them promptly. The vulnerability demonstrates the importance of following secure coding practices such as those outlined in the OWASP Top Ten and the CWE guidelines, particularly focusing on input validation and output encoding to prevent XSS attacks. Additionally, implementing content security policies and regular security assessments can help detect and prevent similar vulnerabilities in other WordPress plugins and themes.