CVE-2025-22624 is a medium-severity Cross-Site Scripting (XSS) vulnerability affecting version 2.4.29 of the FooGallery plugin, developed by bradvin. FooGallery is a WordPress plugin used to create responsive photo galleries with features such as image viewing, justified layouts, masonry, and carousel displays. The vulnerability arises from improper neutralization of input during web page generation, specifically in the file myapp/extensions/albums/admin/class-meta boxes.php. This file dynamically generates web content without adequately validating or sanitizing untrusted data sources, allowing an attacker to inject malicious scripts. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N) indicates that the attack can be performed remotely over the network without privileges or authentication, but requires user interaction (UI:A). The impact on confidentiality is none, integrity is low, and availability is none, with a limited scope affecting the vulnerable component. No known exploits are currently in the wild, and no patches have been linked yet. The vulnerability is categorized under CWE-79, which is a common web application security weakness related to improper input sanitization leading to XSS attacks. Such vulnerabilities can allow attackers to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to session hijacking, defacement, or redirection to malicious sites.

For European organizations using WordPress sites with the vulnerable FooGallery plugin version 2.4.29, this XSS vulnerability poses a risk primarily to the integrity of their web content and the security of their users. Attackers could exploit this flaw to inject malicious scripts that execute in the browsers of site visitors or administrators, potentially stealing session cookies, performing unauthorized actions on behalf of users, or delivering further malware. While the confidentiality impact is low, the integrity of displayed content and user trust can be compromised. This can lead to reputational damage, especially for organizations relying on their websites for customer engagement or e-commerce. Additionally, regulatory frameworks such as the GDPR require organizations to protect user data and maintain secure web environments; exploitation of this vulnerability could lead to compliance issues if personal data is compromised. The requirement for user interaction reduces the likelihood of automated widespread exploitation but does not eliminate targeted attacks, especially spear-phishing or social engineering aimed at site administrators or frequent users.

European organizations should immediately verify if their WordPress installations use FooGallery version 2.4.29. If so, they should upgrade to a patched version once available or apply any official security patches released by the vendor. In the absence of patches, organizations can implement temporary mitigations such as disabling the vulnerable plugin or restricting access to the affected admin pages to trusted IP addresses only. Web application firewalls (WAFs) should be configured to detect and block typical XSS payloads targeting the plugin's endpoints. Additionally, organizations should enforce Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. Regular security audits and scanning for XSS vulnerabilities in web applications should be conducted. User education to recognize phishing attempts and suspicious links can reduce the risk of successful exploitation requiring user interaction. Monitoring web server logs for unusual requests to the vulnerable plugin paths can help detect attempted exploitation.