CVE-2025-6268 is a cross-site scripting (XSS) vulnerability identified in Luna Imaging versions up to 7.5.5.6. The vulnerability exists in an unspecified function within the /luna/servlet/view/search endpoint, where the 'q' parameter is improperly sanitized, allowing an attacker to inject malicious scripts. This flaw enables remote attackers to execute arbitrary JavaScript in the context of the affected web application without requiring authentication. The vulnerability is classified as 'problematic' with a CVSS 4.0 base score of 5.3, indicating a medium severity level. The attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:P). The impact primarily affects the confidentiality and integrity of user data by potentially stealing session cookies, performing actions on behalf of users, or redirecting users to malicious sites. The vendor Luna has been notified but has not responded or issued a patch, and no official fixes are currently available. Although no known exploits are reported in the wild, the public disclosure of the vulnerability and the availability of exploit details increase the risk of exploitation. The vulnerability does not affect system availability directly but can lead to significant security risks through session hijacking or phishing attacks. The lack of vendor response and patch availability necessitates immediate attention from organizations using Luna Imaging to mitigate potential exploitation risks.

For European organizations using Luna Imaging up to version 7.5.5.6, this vulnerability poses a moderate security risk. Exploitation could lead to unauthorized disclosure of sensitive information, such as user credentials or session tokens, through script injection. This may result in account compromise, data leakage, or unauthorized actions performed within the application context. Organizations in sectors handling sensitive or regulated data—such as healthcare, finance, or government—may face compliance and reputational risks if exploited. Since the vulnerability requires user interaction, phishing campaigns or social engineering could be leveraged to trigger the attack, increasing the attack surface. The absence of vendor patches means organizations must rely on compensating controls to reduce risk. Additionally, the public disclosure and exploit availability could attract opportunistic attackers targeting European entities with Luna Imaging deployments, especially those with web-facing interfaces accessible to external users.

1. Implement strict input validation and output encoding on the 'q' parameter at the web application firewall (WAF) or reverse proxy level to block or sanitize malicious payloads before reaching the Luna Imaging application. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 3. Conduct user awareness training focused on recognizing phishing attempts and suspicious links that could trigger the XSS attack. 4. Restrict access to the /luna/servlet/view/search endpoint by IP whitelisting or VPN access to limit exposure to trusted users only. 5. Monitor web server and application logs for unusual query parameter patterns or repeated attempts to exploit the 'q' parameter. 6. Consider deploying runtime application self-protection (RASP) solutions that can detect and block XSS attacks in real-time. 7. Plan for an upgrade or patch deployment once Luna releases a fix; meanwhile, isolate Luna Imaging instances from direct internet exposure where feasible. 8. Review and harden session management controls to minimize the impact of stolen session tokens, including enforcing short session lifetimes and multi-factor authentication where possible.