CVE-2025-46464 is a security vulnerability classified as CWE-79, which corresponds to Cross-site Scripting (XSS) due to improper neutralization of input during web page generation. This vulnerability affects the scripteo Ads Pro Plugin, specifically versions up to 4.88. The flaw allows an attacker to inject malicious scripts that are stored and later executed in the context of users visiting the affected web pages. Stored XSS vulnerabilities are particularly dangerous because the malicious payload is saved on the server and served to multiple users, potentially compromising their browsers and enabling actions such as session hijacking, credential theft, or unauthorized actions on behalf of the user. The CVSS 3.1 base score for this vulnerability is 6.5, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reveals that the attack can be performed remotely over the network with low attack complexity, requires privileges (likely a user with some level of access to input data), and user interaction is required to trigger the payload. The scope is changed, meaning the vulnerability affects components beyond the initially vulnerable component. The impact includes low confidentiality, integrity, and availability impacts, but the combined effect can still be significant in certain environments. No known exploits are currently reported in the wild, and no patches have been linked yet, suggesting that mitigation may rely on vendor updates or manual remediation. The vulnerability arises from insufficient input sanitization or output encoding in the plugin's web page generation process, allowing malicious scripts to be embedded in content served to users.

For European organizations using the scripteo Ads Pro Plugin, this vulnerability poses a moderate risk. Exploitation could lead to unauthorized script execution in the browsers of site visitors or administrators, potentially resulting in session hijacking, data theft, or unauthorized actions within the affected web application. This can damage organizational reputation, lead to data breaches involving personal data protected under GDPR, and cause operational disruptions. Since the vulnerability requires some level of privileges and user interaction, internal users or administrators might be targeted to inject malicious scripts, which could then affect other users. The cross-site scripting can also be leveraged as a stepping stone for more advanced attacks, including phishing or spreading malware. European organizations in sectors such as e-commerce, digital advertising, media, and any business relying on the Ads Pro Plugin for ad management are particularly at risk. The medium severity score suggests that while the vulnerability is not critical, it should be addressed promptly to avoid exploitation, especially given the potential for cross-site scripting to impact confidentiality and integrity of user data.

1. Immediate mitigation should include restricting plugin access to trusted users only, minimizing the number of users with privileges to input or manage ad content. 2. Implement strict input validation and output encoding on all user-supplied data within the Ads Pro Plugin, particularly in areas that generate web pages or display ads. 3. Monitor web application logs and user activity for unusual input patterns or script injections. 4. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 5. Until an official patch is released, consider disabling or removing the Ads Pro Plugin if feasible, or isolate it in a controlled environment. 6. Educate administrators and users about the risks of clicking on suspicious links or executing unexpected scripts. 7. Regularly check for vendor updates or security advisories related to the plugin and apply patches promptly once available. 8. Use web application firewalls (WAF) with rules designed to detect and block XSS payloads targeting the plugin.