CVE-2025-13505 is a stored Cross-site Scripting (XSS) vulnerability classified under CWE-79 and CWE-80 affecting Datateam Information Technologies Inc.'s Datactive software versions from 2.13.34 before 2.14.0.6. The vulnerability stems from improper neutralization of input during web page generation, specifically failing to sanitize or encode script-related HTML tags correctly. This allows an attacker with low privileges (PR:L) and requiring user interaction (UI:R) to inject malicious scripts that are stored and later executed in the context of other users' browsers. The vulnerability has a CVSS 3.1 base score of 4.8, indicating medium severity, with attack vector being adjacent network (AV:A), low attack complexity (AC:L), and scope changed (S:C), meaning the impact extends beyond the vulnerable component. The confidentiality and integrity of user data can be partially compromised, for example through session hijacking or manipulation of displayed content, but availability is not impacted. No public exploits are known at this time, but the vulnerability poses a risk especially in environments where Datactive is used to process or display sensitive information. The flaw highlights the importance of proper input validation and output encoding in web applications to prevent script injection attacks. Since the vulnerability affects versions before 2.14.0.6, upgrading to patched versions when available is critical.

For European organizations, this vulnerability could lead to unauthorized disclosure of sensitive information and manipulation of data integrity within the Datactive application environment. Attackers exploiting this stored XSS could hijack user sessions, steal credentials, or perform actions on behalf of legitimate users, potentially leading to further compromise within the network. Although availability is not affected, the confidentiality and integrity impacts can undermine trust in the affected systems and lead to regulatory compliance issues under GDPR if personal data is exposed. Organizations in sectors such as finance, healthcare, and government that rely on Datactive for data analysis or reporting are particularly at risk. The requirement for low privileges and user interaction lowers the barrier for exploitation, especially in environments where users may be targeted via phishing or social engineering to trigger the malicious payload. The medium severity rating suggests a moderate but non-negligible risk that should be addressed promptly to avoid escalation.

1. Upgrade Datactive to version 2.14.0.6 or later as soon as the patch is available from the vendor. 2. Until patching is possible, implement strict input validation and sanitization on all user-supplied data fields within the application to prevent injection of malicious scripts. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4. Conduct regular security awareness training for users to recognize and avoid phishing attempts that could trigger stored XSS payloads. 5. Monitor application logs and user activity for unusual behavior indicative of XSS exploitation attempts. 6. Use web application firewalls (WAFs) with rules tuned to detect and block common XSS attack patterns targeting Datactive. 7. Review and harden session management controls to limit the impact of session hijacking if exploitation occurs. 8. Perform security testing and code reviews focusing on input handling and output encoding in the affected application components.