CVE-2025-47705 is a Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the Drupal IFrame Remove Filter module versions prior to 2.0.5, specifically from version 0.0.0 up to but not including 2.0.5. The vulnerability arises due to improper neutralization of input during web page generation, allowing malicious actors to inject and execute arbitrary scripts within the context of a vulnerable Drupal site. The vulnerability is remotely exploitable over the network (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R), such as a victim 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, potentially impacting the entire Drupal site. The impact includes limited confidentiality and integrity loss (C:L, I:L) but no impact on availability (A:N). The CVSS 3.1 base score is 6.1, indicating a medium severity level. No known exploits are currently reported in the wild, and no patches are linked yet, suggesting that the vulnerability is newly disclosed. The Drupal IFrame Remove Filter is a module designed to sanitize or remove iframe elements from content, and the improper sanitization leads to this XSS flaw. This vulnerability could be leveraged to perform session hijacking, defacement, phishing, or other malicious activities by injecting scripts that execute in the context of authenticated users or administrators.

For European organizations using Drupal with the IFrame Remove Filter module, this vulnerability poses a significant risk to web application security. Exploitation could lead to unauthorized access to user sessions, theft of sensitive information, or manipulation of website content. Given Drupal's widespread use in government, education, and enterprise sectors across Europe, successful exploitation could undermine trust, cause data breaches, and disrupt services. The scope change means that the vulnerability could affect multiple components or users beyond the initial injection point, increasing the potential damage. Organizations handling personal data under GDPR must consider the regulatory implications of such breaches. Although the vulnerability requires user interaction, social engineering or phishing campaigns could facilitate exploitation. The absence of known exploits currently reduces immediate risk but also underscores the need for proactive mitigation before attackers develop weaponized payloads.

European organizations should prioritize updating the Drupal IFrame Remove Filter module to version 2.0.5 or later once available. Until patches are released, implement strict Content Security Policy (CSP) headers to restrict script execution and mitigate XSS impact. Employ web application firewalls (WAFs) with rules targeting Drupal-specific XSS patterns to detect and block exploit attempts. Conduct thorough input validation and output encoding on all user-supplied content, especially where iframes or HTML content are involved. Educate users about phishing risks to reduce the likelihood of user interaction-based exploitation. Regularly audit Drupal modules for updates and security advisories. Additionally, monitor logs for suspicious activities indicative of XSS exploitation attempts. For high-value targets, consider isolating Drupal instances or limiting iframe usage to trusted sources only.