CVE-2025-54724 is a high-severity reflected Cross-site Scripting (XSS) vulnerability identified in the uxper Golo product, affecting versions up to 1.7.1. This vulnerability arises due to improper neutralization of input during web page generation, classified under CWE-79. Reflected XSS occurs when untrusted user input is immediately included in web responses without adequate sanitization or encoding, allowing attackers to inject malicious scripts that execute in the context of a victim's browser. The CVSS 3.1 base score of 7.1 reflects a high impact, with an attack vector of network (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 resources beyond the vulnerable component. The vulnerability impacts confidentiality, integrity, and availability to a limited extent (C:L, I:L, A:L), as malicious scripts can steal session tokens, manipulate page content, or perform actions on behalf of the user. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that mitigation may rely on configuration or workaround measures until official fixes are released. The vulnerability is specifically tied to the uxper Golo product, a web application or platform, where input fields or URL parameters are not properly sanitized before being reflected in the HTML output, enabling attackers to craft malicious URLs or inputs that execute arbitrary JavaScript in the victim's browser.

For European organizations using uxper Golo, this vulnerability poses significant risks. Exploitation can lead to session hijacking, credential theft, unauthorized actions performed with user privileges, and potential spread of malware via injected scripts. This can compromise sensitive data confidentiality and integrity, disrupt service availability, and damage organizational reputation. Sectors such as finance, healthcare, government, and critical infrastructure that rely on web applications for operations are particularly vulnerable. Additionally, the scope change in the CVSS vector suggests that the impact could extend beyond the immediate application, potentially affecting integrated systems or services. Given the requirement for user interaction, phishing or social engineering campaigns could be used to lure users into clicking malicious links, increasing the attack surface. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once the vulnerability becomes public knowledge. European organizations must be vigilant, especially those with public-facing web portals or customer-facing services using Golo.

1. Immediate mitigation should include implementing strict input validation and output encoding on all user-supplied data reflected in web pages, focusing on HTML, JavaScript, and URL contexts. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. 3. Use web application firewalls (WAFs) with updated rules to detect and block malicious payloads targeting this vulnerability. 4. Educate users to be cautious with unsolicited links and emails to reduce the risk of social engineering exploitation. 5. Monitor web server and application logs for unusual requests or patterns indicative of attempted exploitation. 6. Coordinate with uxper for timely patches or updates and plan for rapid deployment once available. 7. Conduct security testing and code reviews focused on input handling in Golo deployments to identify and remediate similar issues proactively. 8. Isolate critical systems and limit privileges to minimize the impact if exploitation occurs. These steps go beyond generic advice by focusing on layered defenses, user awareness, and proactive monitoring tailored to the specific nature of the reflected XSS in Golo.