CVE-2025-23933 in WpF Ultimate Carousel Plugin
Summary
by MITRE • 01/16/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WpFreeware WpF Ultimate Carousel allows Stored XSS.This issue affects WpF Ultimate Carousel: from n/a through 1.0.11.
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Analysis
by VulDB Data Team • 02/10/2025
The vulnerability CVE-2025-23933 represents a critical cross-site scripting flaw within the WpFreeware WpF Ultimate Carousel plugin, classified under CWE-79 as improper neutralization of input during web page generation. This weakness enables attackers to inject malicious scripts into web pages viewed by other users, creating a persistent security risk that can affect multiple visitors simultaneously. The vulnerability specifically manifests as a stored XSS attack vector, meaning that malicious payloads are permanently stored on the server and executed whenever affected pages are accessed by unsuspecting users. The affected plugin versions range from an unspecified starting point through version 1.0.11, indicating that all iterations within this range are potentially vulnerable to exploitation. This type of vulnerability is particularly dangerous because it allows attackers to maintain persistent access to victim systems and can be leveraged for various malicious activities including session hijacking, data theft, and redirection to malicious websites. The vulnerability occurs during the web page generation process where user input is not properly sanitized or escaped before being rendered in web pages, creating an opportunity for attackers to inject malicious JavaScript code.
The technical exploitation of this vulnerability requires an attacker to submit malicious input through the plugin's interface or API endpoints that handle carousel configurations or content management. Once the malicious code is stored in the database, it becomes part of the legitimate web page content and executes in the context of other users' browsers when they view pages utilizing the vulnerable carousel functionality. This stored nature of the attack means that even if the initial injection point is patched, the malicious code remains active and continues to pose a threat to users who access affected pages. The impact extends beyond simple script execution as attackers can leverage this vulnerability to steal session cookies, modify page content, redirect users to phishing sites, or perform actions on behalf of authenticated users. The vulnerability is particularly concerning in WordPress environments where plugins often handle user-generated content and configuration data, making them prime targets for attackers seeking to establish persistent footholds within web applications.
Organizations and users running the WpF Ultimate Carousel plugin must immediately implement mitigation strategies to protect their systems from potential exploitation. The primary recommendation involves upgrading to the latest available version of the plugin where the XSS vulnerability has been addressed through proper input sanitization and output escaping mechanisms. Additionally, administrators should implement comprehensive input validation at multiple layers of the application architecture, ensuring that all user-supplied data is properly escaped before being rendered in web pages. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though these should not be considered a substitute for proper code-level fixes. Security monitoring should be enhanced to detect unusual patterns in plugin usage or content modifications that might indicate exploitation attempts. Regular security audits of WordPress installations should include comprehensive plugin vulnerability assessments to identify and remediate similar issues before they can be exploited. The vulnerability also highlights the importance of implementing the principle of least privilege in plugin configurations, limiting the ability of users to inject potentially malicious content. Organizations should also consider implementing Content Security Policy headers to add an additional layer of protection against script injection attacks, as outlined in the ATT&CK framework's technique T1059.001 for command and scripting interpreter.
The broader implications of this vulnerability extend to WordPress security practices and highlight the critical need for proper input validation and output escaping in web applications. This issue demonstrates how seemingly minor flaws in plugin development can create significant security risks that affect entire user bases. The stored nature of the vulnerability means that once exploited, the impact can persist long after the initial attack, making it particularly difficult to contain and remediate. Security researchers and plugin developers should prioritize the implementation of robust sanitization routines and automated testing for XSS vulnerabilities during the development lifecycle. This vulnerability serves as a reminder of the importance of maintaining up-to-date software, implementing proper security controls, and conducting regular vulnerability assessments to protect against persistent threats in web applications. Organizations should also establish incident response procedures specifically tailored to handle XSS vulnerabilities, ensuring rapid identification and remediation of such threats to minimize potential damage to user data and system integrity.