CVE-2025-47705 is a Cross-Site Scripting (XSS) vulnerability classified under CWE-79, found in the Drupal IFrame Remove Filter module. This module is designed to sanitize or remove iframe elements from user-submitted content to prevent malicious iframe injection. However, due to improper neutralization of input during web page generation, the vulnerability allows an attacker to inject arbitrary JavaScript code into web pages rendered by Drupal sites using affected versions of the module (versions 7.x-1.0 through 7.x-1.5, 1.0 through 1.2, and 2.0.0 before 2.0.5). The vulnerability does not require any privileges or authentication, but exploitation requires user interaction, such as a victim clicking a crafted link or visiting a malicious page. The CVSS v3.1 score is 6.1 (medium severity), reflecting network attack vector, low attack complexity, no privileges required, but user interaction needed, and a scope change indicating that the vulnerability affects components beyond the vulnerable module itself. The impact includes limited confidentiality and integrity loss, as injected scripts can steal session tokens, perform actions on behalf of users, or manipulate page content. No known exploits have been reported in the wild as of the publication date (May 14, 2025). The vulnerability is significant for Drupal-based websites, especially those that rely on the IFrame Remove Filter module to sanitize user content, as it undermines the trustworthiness of content rendering and can facilitate further attacks such as session hijacking or phishing.

For European organizations, the vulnerability poses a risk primarily to web applications and content management systems built on Drupal that utilize the affected IFrame Remove Filter module. Successful exploitation can lead to theft of user credentials, session hijacking, defacement, or redirection to malicious sites, impacting confidentiality and integrity of user data and potentially damaging organizational reputation. Public sector websites, e-commerce platforms, and any service relying on Drupal for content delivery are at risk. The medium severity indicates that while the vulnerability is not immediately critical, it can be leveraged as part of a broader attack chain. Given the widespread use of Drupal in Europe, especially in government, education, and media sectors, the impact could be significant if not addressed promptly. Additionally, the scope change in the CVSS vector suggests that the vulnerability could affect other components or modules interacting with the filter, increasing the potential attack surface. The lack of known exploits in the wild reduces immediate risk but should not lead to complacency, as attackers may develop exploits rapidly once details are public.

1. Immediately upgrade the Drupal IFrame Remove Filter module to version 2.0.5 or later, or 7.x-1.6 or later once available, as these versions contain the patch for this vulnerability. 2. If patching is not immediately possible, implement web application firewall (WAF) rules to detect and block suspicious input patterns that could exploit XSS, focusing on iframe-related payloads. 3. Enforce strict Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce the impact of potential XSS attacks. 4. Conduct thorough input validation and output encoding on all user-supplied content, especially where iframes or HTML content is allowed. 5. Monitor web server and application logs for unusual or suspicious requests that may indicate attempted exploitation. 6. Educate content editors and administrators about the risks of embedding untrusted content and the importance of applying security updates promptly. 7. Review and limit user permissions related to content submission to reduce the risk of malicious content injection. 8. Consider deploying runtime application self-protection (RASP) solutions to detect and block XSS attacks in real time.