CVE-2025-15171 is a cross-site scripting (XSS) vulnerability identified in SohuTV CacheCloud versions 3.0, 3.1, and 3.2.0, specifically in the index function of the ServerController.java file. The vulnerability allows an attacker to inject malicious scripts remotely without requiring authentication, though user interaction is necessary to trigger the payload. The vulnerability arises from insufficient input sanitization or output encoding in the affected function, enabling attackers to craft payloads that execute arbitrary JavaScript in the context of the victim's browser. This can lead to session hijacking, credential theft, or defacement of web interfaces. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L - low privileges), user interaction required (UI:P), and limited impact on integrity and confidentiality (VI:L, VC:N). No known exploits are currently active in the wild, but a public exploit exists, increasing the risk of exploitation. The vendor has been notified but has not yet issued a patch or response. Given CacheCloud's role in caching and content delivery, exploitation could disrupt service integrity or expose sensitive session data. The vulnerability does not affect availability directly but can undermine trust and data confidentiality. The lack of vendor patch necessitates immediate mitigation by users.

For European organizations, the impact of CVE-2025-15171 includes potential compromise of user sessions and unauthorized actions performed via injected scripts, which can lead to data leakage or unauthorized access to cached content management interfaces. Organizations relying on SohuTV CacheCloud for content caching or delivery could face reputational damage, especially media companies or content providers. The vulnerability could be leveraged in targeted phishing or social engineering campaigns to escalate access or pivot within networks. While the direct availability impact is low, the integrity and confidentiality risks can affect compliance with GDPR and other data protection regulations, potentially resulting in legal and financial consequences. The presence of a public exploit increases the urgency for European entities to address this vulnerability proactively. Additionally, the vulnerability could be used as a foothold for more complex attacks within enterprise environments.

Since no official patch is currently available, European organizations should implement strict input validation and output encoding on all user-supplied data interacting with CacheCloud interfaces. Deploying a web application firewall (WAF) with custom rules to detect and block XSS payloads targeting the ServerController index function is recommended. Organizations should conduct thorough code reviews and penetration testing focused on CacheCloud components to identify and remediate similar injection points. Monitoring web logs and user activity for anomalous patterns indicative of XSS exploitation attempts is critical. Restricting access to CacheCloud management interfaces to trusted networks and enforcing multi-factor authentication can reduce exploitation risk. Organizations should also prepare incident response plans specific to XSS attacks and educate users about the risks of interacting with suspicious links or content. Maintaining up-to-date backups and isolating CacheCloud instances can limit damage if exploitation occurs. Finally, organizations should maintain communication with the vendor for patch releases and apply updates promptly once available.