CVE-2025-47515 is a Cross-site Scripting (XSS) vulnerability classified under CWE-79, specifically a DOM-Based XSS issue found in the Seb WP DPE-GES product, affecting versions up to 1.6. This vulnerability arises from improper neutralization of input during web page generation, allowing malicious scripts to be injected and executed in the context of the victim's browser. DOM-Based XSS differs from traditional reflected or stored XSS in that the vulnerability is triggered by client-side script processing of untrusted data, often without server-side sanitization. Exploiting this vulnerability requires an attacker to craft a malicious URL or input that, when processed by the vulnerable web application, results in execution of arbitrary JavaScript code in the victim’s browser. The CVSS 3.1 base score is 6.5 (medium severity), with vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L, indicating network attack vector, low attack complexity, requires privileges (authenticated user), user interaction, and impacts confidentiality, integrity, and availability to a limited extent with scope change. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is significant because it can lead to session hijacking, unauthorized actions on behalf of users, or redirection to malicious sites, especially in environments where users have elevated privileges or sensitive data is handled. The requirement for user interaction and privileges somewhat limits the ease of exploitation but does not eliminate risk, particularly in environments with many authenticated users or where phishing is feasible.

For European organizations, this vulnerability poses a moderate risk, especially those using Seb WP DPE-GES in their web infrastructure. The DOM-Based XSS can lead to unauthorized disclosure of sensitive information, session hijacking, and potential manipulation of web application behavior, impacting confidentiality, integrity, and availability of services. Organizations in sectors such as government, finance, healthcare, and critical infrastructure that rely on this product could face targeted attacks aiming to exploit this vulnerability for espionage, fraud, or disruption. The cross-site scripting nature also increases the risk of supply chain attacks or lateral movement within networks if attackers leverage compromised user sessions. Given the requirement for authenticated access and user interaction, internal users or partners could be targeted via social engineering to trigger the exploit. The scope change in the CVSS vector suggests that the vulnerability could affect resources beyond the initially vulnerable component, potentially impacting other integrated systems or services. The absence of known exploits currently provides a window for proactive mitigation before widespread exploitation occurs.

1. Immediate mitigation should include implementing strict input validation and output encoding on all user-controllable inputs processed by the client-side scripts in WP DPE-GES, focusing on sanitizing data before DOM insertion. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 3. Limit user privileges to the minimum necessary, reducing the risk posed by authenticated user exploitation. 4. Conduct user awareness training to recognize and avoid phishing attempts that could lead to malicious URL clicks triggering the vulnerability. 5. Monitor web application logs and user activity for unusual patterns indicative of exploitation attempts. 6. Engage with the vendor (Seb) for timely patches or updates and apply them promptly once available. 7. Consider deploying Web Application Firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting this product. 8. Review and update session management policies to minimize session hijacking risks, including short session lifetimes and multi-factor authentication.