The Social Media WPCF7 Stop Words plugin for WordPress, up to and including version 1.1.3, contains a Cross-Site Request Forgery (CSRF) vulnerability identified as CVE-2025-12413. This vulnerability stems from the smWpCfSwOptions() function lacking proper nonce validation, which is a security token mechanism designed to prevent unauthorized actions. Without this validation, attackers can craft malicious requests that, if executed by an authenticated administrator (through actions like clicking a malicious link), allow the attacker to alter plugin settings or inject malicious web scripts. The attack vector is remote and requires no prior authentication, but does require user interaction from an administrator. The CVSS 3.1 base score is 5.4, reflecting medium severity, with an attack vector of network, low attack complexity, no privileges required, user interaction required, and impacts on integrity and availability but not confidentiality. Although no known exploits have been reported in the wild, the vulnerability poses a risk to WordPress sites using this plugin, potentially enabling attackers to compromise site integrity or availability through unauthorized configuration changes or script injection. The vulnerability highlights the importance of nonce validation in WordPress plugin development to prevent CSRF attacks.

The primary impact of this vulnerability is unauthorized modification of plugin settings and potential injection of malicious scripts, which can degrade site integrity and availability. Attackers exploiting this flaw can manipulate the plugin’s behavior, potentially disrupting site functionality or introducing malicious content that could affect site visitors or administrators. While confidentiality is not directly impacted, the injection of malicious scripts could lead to secondary attacks such as cross-site scripting (XSS) or drive-by downloads, indirectly compromising user data. The requirement for administrator interaction limits the attack scope but does not eliminate risk, especially in environments where administrators may be targeted by phishing or social engineering. Organizations relying on this plugin for WordPress sites face risks of site defacement, service disruption, or reputational damage. The vulnerability could be leveraged as part of a broader attack chain to gain further access or persistence within affected environments.

Organizations should immediately audit their WordPress installations to identify the presence of the Social Media WPCF7 Stop Words plugin and verify the version in use. Until an official patch is released, administrators should consider disabling or removing the plugin to eliminate exposure. Developers should implement proper nonce validation in the smWpCfSwOptions() function to ensure that all requests modifying plugin settings are verified as legitimate and originate from authorized users. Additionally, administrators should be trained to recognize and avoid phishing attempts or suspicious links that could trigger CSRF attacks. Employing web application firewalls (WAFs) with rules to detect and block CSRF attack patterns can provide an additional layer of defense. Regular backups and monitoring for unauthorized changes to plugin settings or site content can help detect exploitation attempts early. Finally, maintain WordPress core and plugins up to date to benefit from security fixes and improvements.