CVE-2026-2546 identifies a cross-site scripting vulnerability in LigeroSmart, a web-based service management and ticketing system, affecting all versions up to 6.1.26. The vulnerability is located in an unspecified function within the /otrs/index.pl script, where the SortBy parameter is improperly sanitized. This flaw allows an attacker to inject malicious JavaScript code that executes in the context of the victim's browser when they interact with a crafted URL or page. The attack vector is remote and does not require authentication, but user interaction is necessary to trigger the exploit. The vulnerability can lead to theft of session cookies, redirection to malicious sites, or execution of arbitrary scripts, compromising user confidentiality and integrity. Despite early reporting to the LigeroSmart project, no official patch or remediation has been released, increasing the risk of exploitation. The CVSS 4.0 vector indicates low attack complexity and no privileges required, but user interaction is needed. No known exploits in the wild have been reported yet, but public disclosure raises the likelihood of exploitation attempts. The vulnerability affects a broad range of versions, making many deployments vulnerable. The lack of patch links suggests that organizations must implement interim mitigations while awaiting an official fix.

The primary impact of this vulnerability is on the confidentiality and integrity of users interacting with LigeroSmart instances. Successful exploitation can lead to session hijacking, allowing attackers to impersonate legitimate users and access sensitive information or perform unauthorized actions. It can also facilitate phishing attacks by injecting malicious content or redirecting users to fraudulent sites. Although availability impact is minimal, the reputational damage and potential data breaches can be significant. Organizations relying on LigeroSmart for IT service management, customer support, or internal ticketing may face operational disruptions and loss of trust. The remote and unauthenticated nature of the attack increases the risk, especially in environments with many users or exposed web interfaces. The absence of an official patch prolongs exposure, and public exploit disclosure may lead to increased attack attempts. Overall, the vulnerability poses a moderate risk but can escalate if combined with other weaknesses or social engineering.

1. Implement strict input validation and output encoding on the SortBy parameter to neutralize malicious scripts. 2. Deploy a web application firewall (WAF) with rules to detect and block XSS attack patterns targeting LigeroSmart URLs. 3. Educate users to avoid clicking on suspicious or unsolicited links related to LigeroSmart interfaces. 4. Restrict access to LigeroSmart web interfaces via VPN or IP whitelisting to reduce exposure. 5. Monitor web server logs for unusual requests containing suspicious SortBy parameter values. 6. Apply Content Security Policy (CSP) headers to limit script execution sources and mitigate impact of injected scripts. 7. Regularly back up LigeroSmart data and configurations to enable recovery in case of compromise. 8. Engage with the LigeroSmart vendor or community to track patch releases and apply updates promptly once available. 9. Consider temporary disabling or restricting the vulnerable functionality if feasible until a patch is released.