CVE-2025-13143 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Poll, Survey & Quiz Maker Plugin by Opinion Stage for WordPress, affecting all versions up to and including 19.12.0. The vulnerability stems from the disconnect_account_action function lacking proper nonce validation, which is a security token used to verify the legitimacy of requests. Without this validation, attackers can craft malicious requests that, if executed by an authenticated site administrator (through clicking a specially crafted link), can cause the WordPress site to disconnect from the Opinion Stage platform integration. This action could disrupt the functionality of polls, surveys, and quizzes embedded on the site, potentially impacting user engagement and data collection. The vulnerability does not require authentication or elevated privileges on the attacker’s part but does require user interaction from an administrator. The CVSS 3.1 base score is 4.3, reflecting a medium severity level, with the vector indicating network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or availability impact, and limited integrity impact. No public exploits have been reported yet, but the vulnerability could be leveraged in targeted attacks, especially against sites heavily reliant on Opinion Stage services. The lack of nonce validation is a common security oversight in WordPress plugins, emphasizing the need for secure coding practices. This vulnerability highlights the risk of CSRF attacks in administrative functions that affect third-party integrations.

For European organizations, the primary impact of this vulnerability is the potential disruption of the Opinion Stage platform integration on WordPress sites, which could affect customer engagement tools such as polls, surveys, and quizzes. This disruption may lead to loss of data continuity, reduced user interaction, and diminished trust in the affected websites. While the vulnerability does not directly compromise sensitive data confidentiality or site availability, the integrity of the integration is at risk. Organizations relying on these plugins for marketing, feedback collection, or user interaction may experience operational setbacks. Additionally, successful exploitation could be used as a stepping stone for further social engineering or targeted attacks against administrators. Given the widespread use of WordPress in Europe and the popularity of interactive content plugins, the vulnerability poses a moderate operational risk, especially for sectors like e-commerce, media, and public services that utilize Opinion Stage features for user engagement.

1. Monitor for and apply official patches or updates from the plugin vendor as soon as they become available. 2. If patches are not yet released, implement manual nonce validation in the disconnect_account_action function to ensure requests are legitimate. 3. Restrict administrative access and enforce the principle of least privilege to minimize the number of users who can perform sensitive actions. 4. Educate site administrators about the risks of phishing and social engineering attacks, emphasizing caution when clicking unsolicited links. 5. Employ web application firewalls (WAFs) with rules to detect and block suspicious CSRF attempts targeting the plugin’s endpoints. 6. Regularly audit WordPress plugins for security best practices, focusing on nonce usage and request validation. 7. Consider disabling or limiting the Opinion Stage integration temporarily if the risk is deemed high and no immediate patch is available. 8. Implement Content Security Policy (CSP) headers to reduce the risk of malicious content execution that could facilitate CSRF attacks.