CVE-2026-2545 is a cross-site scripting vulnerability identified in LigeroSmart, a web-based IT service management platform, affecting all versions up to 6.1.26. The vulnerability resides in the handling of the 'Profile' parameter within the /otrs/index.pl?Action=AgentTicketSearch endpoint. An attacker can craft a malicious URL that injects executable JavaScript code, which is then executed in the context of the victim's browser when the link is accessed. This type of vulnerability allows attackers to perform actions such as session hijacking, stealing cookies or credentials, and executing arbitrary scripts that can manipulate the user interface or exfiltrate data. The attack vector is remote and does not require prior authentication, although user interaction is necessary to trigger the exploit. The CVSS 4.0 score of 5.1 reflects a medium severity, considering the ease of exploitation and limited impact on confidentiality and integrity. The vendor has been informed but has not yet issued a patch or official response, and while a public exploit exists, no active exploitation campaigns have been documented. This vulnerability highlights the importance of proper input sanitization and output encoding in web applications to prevent script injection attacks.

For European organizations, the impact of CVE-2026-2545 can be significant, especially for those relying on LigeroSmart for IT service management and ticketing operations. Successful exploitation could lead to unauthorized access to user sessions, enabling attackers to impersonate legitimate users, access sensitive ticket data, or manipulate service requests. This can result in data breaches, disruption of IT support workflows, and potential lateral movement within the network. Given the remote exploitability and lack of required authentication, attackers can target employees via phishing or malicious links, increasing the risk of widespread compromise. The medium severity rating suggests that while the vulnerability does not directly compromise system integrity or availability, the confidentiality of user data and trust in the service platform can be undermined. Organizations handling sensitive or regulated data, such as those in finance, healthcare, or government sectors, may face compliance and reputational risks if exploited.

1. Implement strict input validation and output encoding on the 'Profile' parameter to neutralize malicious scripts. 2. Deploy and configure a Web Application Firewall (WAF) with rules to detect and block XSS attack patterns targeting LigeroSmart endpoints. 3. Educate users and administrators about the risks of clicking untrusted links, especially those purporting to be from internal ticketing systems. 4. Monitor web server and application logs for unusual requests to /otrs/index.pl with suspicious 'Profile' parameter values. 5. Isolate LigeroSmart instances within segmented network zones to limit potential lateral movement if compromised. 6. Regularly update and patch LigeroSmart once the vendor releases a fix; in the meantime, consider temporary workarounds such as disabling or restricting access to the vulnerable endpoint if feasible. 7. Employ Content Security Policy (CSP) headers to reduce the impact of XSS by restricting script execution sources. 8. Conduct penetration testing focused on web application security to identify and remediate similar vulnerabilities proactively.