CVE-2025-5925 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Bunny’s Print CSS plugin for WordPress, specifically all versions up to and including 0.95. The vulnerability arises due to missing or incorrect nonce validation in the pcss_options_subpanel() function, which is responsible for handling plugin settings updates. Nonces in WordPress are security tokens used to verify the legitimacy of requests and prevent unauthorized actions. The absence or improper implementation of nonce validation allows an attacker to craft a malicious request that, if executed by an authenticated site administrator (e.g., by clicking a link or visiting a malicious page), can update the plugin’s settings without the administrator’s explicit consent. This type of attack does not require the attacker to be authenticated themselves but relies on tricking a privileged user into performing an action. The CVSS 3.1 base score of 4.3 reflects a medium severity, indicating limited impact primarily on the integrity of the plugin’s configuration, with no direct impact on confidentiality or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is typical of CSRF issues where state-changing operations lack proper request validation, making it a significant concern for WordPress sites using this plugin, especially those with multiple administrators or users with elevated privileges.

For European organizations using WordPress sites with the Bunny’s Print CSS plugin, this vulnerability poses a risk of unauthorized modification of plugin settings, which could lead to misconfigurations affecting site behavior or appearance. While it does not directly compromise sensitive data or availability, altered settings could be leveraged as a foothold for further attacks or to degrade user experience. Organizations with multiple administrators or editors are particularly vulnerable since the attack requires tricking an authenticated user with sufficient privileges. This could affect corporate websites, e-commerce platforms, or content portals, potentially damaging reputation or causing operational disruptions. Given the widespread use of WordPress across Europe, especially in small and medium enterprises, the vulnerability could be exploited in targeted phishing campaigns. However, the lack of known exploits and the medium severity suggest the immediate risk is moderate but should not be ignored.

To mitigate this vulnerability, European organizations should first verify if they use the Bunny’s Print CSS plugin and identify the version in use. Immediate steps include: 1) Restrict administrative access to trusted personnel and enforce strong authentication mechanisms to reduce the risk of successful CSRF exploitation. 2) Educate administrators about phishing and social engineering tactics to prevent them from clicking on malicious links. 3) Monitor and audit plugin settings for unexpected changes. 4) If possible, implement Web Application Firewall (WAF) rules to detect and block suspicious POST requests targeting the plugin’s settings endpoint. 5) Since no official patch is currently available, consider temporarily disabling the plugin or replacing it with alternative solutions until a secure version is released. 6) Follow up with the plugin vendor or WordPress security advisories for updates and apply patches promptly once available. 7) Employ Content Security Policy (CSP) headers to reduce the risk of malicious script execution that could facilitate CSRF attacks.