CVE-2025-11291 is a cross-site scripting (XSS) vulnerability identified in the ixmaps website2017 product, specifically affecting the /map.php file's HTTP GET request handler. The vulnerability arises from improper sanitization or validation of the 'trid' parameter, which can be manipulated by an attacker to inject malicious scripts. This flaw allows remote attackers to execute arbitrary scripts in the context of the victim's browser without requiring authentication. The vulnerability has been publicly disclosed, and an exploit is available, increasing the risk of exploitation. The product uses continuous delivery with rolling releases, complicating the identification of affected versions and patches, and the vendor has not responded to the disclosure, leaving users without official remediation guidance. The CVSS v4.0 base score is 5.3 (medium severity), reflecting that the attack vector is network-based, requires no privileges or user interaction, and impacts integrity and availability to a limited extent but not confidentiality. The vulnerability could be leveraged to conduct phishing, session hijacking, or other client-side attacks against users interacting with the vulnerable web application.

For European organizations using ixmaps website2017, this vulnerability poses a moderate risk. Exploitation could lead to the compromise of user sessions, theft of sensitive information such as cookies or tokens, and potential defacement or manipulation of web content. This can damage organizational reputation, lead to regulatory scrutiny under GDPR if personal data is compromised, and disrupt services relying on the affected web application. Since the vulnerability is remotely exploitable without authentication, attackers can target any user accessing the vulnerable site, increasing the attack surface. The lack of vendor response and unclear patch availability may prolong exposure. Organizations in sectors with high reliance on web mapping or geospatial services, such as urban planning, transportation, or environmental monitoring, may face operational disruptions or data integrity issues.

Organizations should immediately audit their deployments of ixmaps website2017 to identify if they are running affected versions. Given the absence of official patches, implement web application firewall (WAF) rules specifically targeting suspicious payloads in the 'trid' parameter to block potential XSS attack vectors. Employ input validation and output encoding at the application level as a compensating control if source code access is available. Educate users about the risks of clicking suspicious links and encourage the use of modern browsers with built-in XSS protections. Monitor web server logs for unusual GET requests containing script tags or encoded payloads targeting 'trid'. Consider isolating or restricting access to the vulnerable web application until a vendor patch or update is available. Engage with the vendor or community forums for updates or unofficial patches. Finally, implement Content Security Policy (CSP) headers to reduce the impact of potential XSS attacks by restricting script execution sources.