CVE-2025-11946 is a cross-site scripting vulnerability identified in LogicalDOC Community Edition versions 9.2.0 and 9.2.1, specifically within the /frontend.jsp file of the Add Contact Page component. The vulnerability arises from improper sanitization of user-supplied input fields including First Name, Last Name, Company, Address, Phone, and Mobile. An attacker can craft malicious input to inject executable scripts, which are then rendered in the victim's browser when viewing the affected page. This flaw allows remote attackers to execute arbitrary JavaScript in the context of the victim's session without requiring authentication, though user interaction is necessary to trigger the payload. The vulnerability has a CVSS 4.0 base score of 5.1, reflecting a medium severity level due to its potential to compromise user confidentiality and integrity with limited impact on availability. Despite the public release of an exploit, no known active exploitation campaigns have been reported. The vendor has not issued any patches or official response, leaving users exposed. The vulnerability could be leveraged for session hijacking, phishing, or other malicious activities targeting users of LogicalDOC Community Edition. Given the nature of document management systems, such attacks could lead to unauthorized access to sensitive documents or user credentials if exploited successfully.

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality and integrity. LogicalDOC is used for document management, often containing sensitive corporate or personal data. Exploitation could allow attackers to steal session cookies, impersonate users, or conduct phishing attacks within the context of the application, potentially leading to unauthorized data access or manipulation. Public-facing LogicalDOC instances are at higher risk, especially if accessed by multiple users or integrated with other enterprise systems. The lack of vendor response and patches increases exposure time, raising the likelihood of exploitation as attackers develop and deploy exploits. Organizations in Europe with compliance obligations under GDPR must consider the risk of data breaches resulting from such attacks. While availability impact is minimal, the reputational and regulatory consequences of a successful attack could be significant. The requirement for user interaction limits automated mass exploitation but does not eliminate risk, especially in environments with less security awareness or where social engineering is feasible.

Given the absence of official patches, European organizations should implement immediate compensating controls. First, apply strict input validation and sanitization on all user-supplied data fields related to contact information, either via custom code or web application firewalls (WAFs) configured to detect and block XSS payloads targeting LogicalDOC. Restrict access to the Add Contact Page component to trusted users or internal networks only, using network segmentation or VPNs. Educate users about the risks of clicking suspicious links or entering data from untrusted sources to reduce the chance of triggering XSS payloads. Monitor application logs and network traffic for unusual patterns indicative of XSS exploitation attempts. Consider deploying Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. If feasible, isolate LogicalDOC instances in hardened environments and regularly back up data to mitigate potential damage. Engage with LogicalDOC vendors or community forums to track any forthcoming patches or updates. Finally, conduct security assessments and penetration tests focusing on XSS vulnerabilities to identify and remediate similar issues proactively.