CVE-2025-57931 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Ays Pro Popup box plugin, a tool used to create popup elements on websites. CSRF vulnerabilities occur when an attacker tricks a victim’s browser into submitting unauthorized requests to a web application where the victim is authenticated, without their knowledge or consent. This specific vulnerability affects versions of the Popup box plugin up to 5.5.4. The attacker can craft malicious web pages or links that, when visited by an authenticated user, cause the victim’s browser to perform unintended actions on the vulnerable site. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) indicates that the attack can be performed remotely over the network with low attack complexity, requires no privileges, and no user interaction, but it only impacts the integrity of the application by allowing unauthorized changes. There is no confidentiality or availability impact. No patches or fixes have been publicly released yet, and no exploits are known to be active in the wild. The vulnerability arises from insufficient verification of the origin of requests, such as missing or inadequate anti-CSRF tokens or failure to validate the HTTP Referer or Origin headers. This flaw could allow attackers to manipulate popup configurations or other settings controlled by the plugin, potentially leading to unauthorized content changes or behavioral modifications on affected websites.

For European organizations, the impact of this CSRF vulnerability primarily concerns the integrity of web applications using the Ays Pro Popup box plugin. Unauthorized changes could include altering popup content, injecting misleading or malicious information, or modifying user interface elements, which might degrade user trust or facilitate further attacks such as phishing or social engineering. While the vulnerability does not directly expose sensitive data or disrupt service availability, the integrity compromise could indirectly lead to reputational damage or compliance issues, especially under regulations like GDPR if user trust or data handling is affected. Organizations running customer-facing websites, e-commerce platforms, or portals that rely on this plugin are at risk of unauthorized content manipulation. The ease of exploitation without user interaction or authentication increases the threat level, as attackers can automate attacks at scale. However, the absence of known exploits in the wild and the medium CVSS score suggest the threat is moderate but should not be ignored.

To mitigate CVE-2025-57931, organizations should first verify if they use the Ays Pro Popup box plugin and identify the affected versions. Since no official patches are currently available, immediate mitigation steps include implementing server-side anti-CSRF protections such as synchronizer tokens or double-submit cookies for all state-changing requests related to the plugin. Web application firewalls (WAFs) can be configured to detect and block suspicious cross-origin requests lacking proper headers or tokens. Administrators should restrict plugin management access to trusted users and monitor logs for unusual activity indicative of CSRF attempts. Additionally, validating the HTTP Referer and Origin headers on the server side can help reject unauthorized requests. Organizations should stay alert for vendor updates or patches and apply them promptly once released. Conducting security audits and penetration testing focused on CSRF vulnerabilities in web applications will help identify and remediate similar issues proactively. User education about avoiding suspicious links can also reduce risk, although this vulnerability does not require user interaction.