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 input to prevent embedding of potentially harmful content. However, versions 7.x-1.0 through 7.x-1.5, 1.0 through 1.2, and 2.0.0 before 2.0.5 fail to properly neutralize malicious input during web page generation. The vulnerability allows an attacker to inject arbitrary JavaScript code into web pages rendered by Drupal sites using the affected module. The attack vector is network-based (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R), such as clicking a crafted link or visiting a malicious page. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the vulnerable component. The impact affects confidentiality and integrity partially (C:L/I:L), but does not impact availability (A:N). Although no known exploits are currently reported, the vulnerability poses a risk to Drupal sites that rely on this module to sanitize iframe content, potentially enabling session hijacking, defacement, or redirection to malicious sites. The lack of an official patch link suggests that users should monitor Drupal security advisories closely and consider manual mitigations until updates are available.

For European organizations, especially those operating public-facing websites or content management systems based on Drupal, this vulnerability can lead to unauthorized script execution in users' browsers. This can result in theft of session cookies, user credential compromise, or manipulation of displayed content, undermining user trust and potentially exposing sensitive data. Organizations in sectors such as government, finance, healthcare, and e-commerce are particularly vulnerable due to the high value of their data and the critical nature of their services. The partial confidentiality and integrity impact could facilitate further attacks like phishing or malware distribution. Additionally, reputational damage and regulatory consequences under GDPR may arise if user data is compromised. Since exploitation requires user interaction, social engineering campaigns could be used to increase attack success. The absence of known exploits currently provides a window for proactive mitigation.

European organizations should prioritize upgrading the Drupal IFrame Remove Filter module to version 2.0.5 or later, or 7.x-1.6 and above, as soon as these become available. Until official patches are released, organizations should implement strict input validation and output encoding on all user-supplied content, particularly iframe-related inputs. Employ Content Security Policy (CSP) headers to restrict script execution and mitigate the impact of injected scripts. Regularly audit Drupal modules for outdated or vulnerable components and disable or remove unused modules. Educate users and administrators about phishing and social engineering risks to reduce the likelihood of user interaction with malicious content. Monitor web server logs and web application firewall (WAF) alerts for suspicious activity related to iframe inputs. Finally, maintain an incident response plan tailored to web application attacks to quickly contain and remediate any exploitation attempts.