CVE-2025-53205 is a high-severity reflected Cross-site Scripting (XSS) vulnerability identified in LambertGroup's Radio Player Shoutcast & Icecast software, affecting versions up to 4.4.7. The vulnerability stems from improper neutralization of user-supplied input during web page generation, categorized under CWE-79. Specifically, the application fails to adequately sanitize or encode input parameters that are reflected in the web interface, allowing an attacker to inject malicious scripts. When a victim accesses a crafted URL or web page containing the malicious payload, the injected script executes in the victim's browser context. This reflected XSS can lead to a range of impacts including theft of user credentials, session hijacking, unauthorized actions performed on behalf of the user, and potential delivery of further malware. The CVSS v3.1 base score of 7.1 reflects the vulnerability's network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that exploitation can affect components beyond the vulnerable software itself. The impact metrics show low confidentiality, integrity, and availability impacts individually, but combined they can be significant in a multi-stage attack. No known exploits are reported in the wild yet, and no patches have been linked at the time of publication, suggesting that organizations should prioritize mitigation and monitoring. The vulnerability affects a niche product used for streaming radio content via Shoutcast and Icecast protocols, which are popular in internet radio broadcasting. The reflected XSS can be exploited by tricking users into clicking malicious links or visiting compromised web pages hosting the vulnerable player interface.

For European organizations, especially those operating internet radio stations, media streaming services, or content delivery platforms using LambertGroup's Radio Player Shoutcast & Icecast, this vulnerability poses a significant risk. Exploitation could lead to session hijacking of administrative or user accounts, unauthorized manipulation of streaming content, or redirection to malicious sites, damaging brand reputation and user trust. Confidentiality of user data and integrity of broadcast content could be compromised. Additionally, attackers could leverage the vulnerability as an initial foothold to pivot into internal networks if the player interfaces are accessible within corporate environments. Given the widespread use of Shoutcast and Icecast in Europe’s digital radio landscape, especially in countries with strong media sectors like Germany, France, and the UK, the impact could be substantial. The requirement for user interaction means phishing or social engineering campaigns may be used to exploit this vulnerability, increasing the risk to end users and employees. The lack of a patch at publication heightens the urgency for interim mitigations to prevent exploitation.

1. Immediate mitigation should include implementing strict input validation and output encoding on all user-supplied data reflected in web pages, particularly in URL parameters and form inputs. 2. Deploy Web Application Firewalls (WAFs) with rules specifically designed to detect and block reflected XSS payloads targeting the Radio Player interface. 3. Restrict access to the Radio Player web interface to trusted networks or authenticated users where possible, reducing exposure to external attackers. 4. Educate users and administrators about the risks of clicking untrusted links and recognizing phishing attempts that could exploit this vulnerability. 5. Monitor web server logs and network traffic for unusual requests or patterns indicative of XSS exploitation attempts. 6. Coordinate with LambertGroup for timely patch releases and apply updates as soon as they become available. 7. Consider isolating the vulnerable player instances in segmented network zones to limit potential lateral movement in case of compromise. 8. Use Content Security Policy (CSP) headers to restrict execution of unauthorized scripts in browsers accessing the player interface.