CVE-2025-41106 identifies a Cross-site Scripting (XSS) vulnerability classified under CWE-79 in the Fairsketch RISE CRM Framework version 3.8.1 and earlier. The vulnerability stems from improper neutralization of input during web page generation, specifically in the handling of the 'first_name' parameter submitted via a POST request to the '/clients/save_contact/' endpoint. Due to insufficient input validation and sanitization, an attacker can inject arbitrary HTML or JavaScript code, which is then rendered in the victim's browser. This flaw allows attackers to execute malicious scripts in the context of the affected web application, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The CVSS 4.0 base score is 5.1 (medium), reflecting that the attack vector is network-based with low attack complexity and no privileges required, but user interaction is necessary. The vulnerability does not impact confidentiality, integrity, or availability directly but can lead to indirect compromise through client-side exploitation. No public exploits have been reported yet, and no official patches are currently linked, indicating that organizations should monitor vendor updates closely. The vulnerability was reserved in April 2025 and published in November 2025 by INCIBE, a reputable cybersecurity entity. The scope is limited to versions prior to 3.9 of the RISE CRM Framework, which is used primarily for customer relationship management tasks. The lack of server-side impact reduces the severity but does not eliminate the risk to end-users interacting with the CRM interface.

For European organizations, the impact of CVE-2025-41106 can be significant, especially for those relying on Fairsketch RISE CRM Framework in customer management and communication workflows. Exploitation could enable attackers to execute malicious scripts in users' browsers, potentially leading to theft of session cookies, unauthorized access to sensitive customer data, or manipulation of CRM records through social engineering or phishing attacks. This can result in reputational damage, regulatory non-compliance (e.g., GDPR violations due to data exposure), and operational disruptions. Sectors such as finance, healthcare, and retail, which handle sensitive personal data, are particularly vulnerable. The medium CVSS score reflects moderate risk, but the ease of exploitation without authentication and the widespread use of web browsers increase the threat surface. Additionally, the vulnerability could be leveraged as a foothold for more complex attacks or lateral movement within an organization's network. European organizations with public-facing CRM portals are at higher risk, especially if they have not implemented compensating controls like web application firewalls or strict content security policies.

1. Apply updates: Monitor Fairsketch vendor communications and apply version 3.9 or later patches as soon as they become available. 2. Input validation: Implement strict server-side validation and sanitization of all user inputs, especially the 'first_name' parameter, to neutralize HTML and script content before processing. 3. Output encoding: Ensure that any user-supplied data rendered in web pages is properly encoded to prevent script execution. 4. Web Application Firewall (WAF): Deploy and configure a WAF with rules to detect and block XSS payloads targeting the CRM endpoints. 5. Content Security Policy (CSP): Enforce a strong CSP to restrict the execution of unauthorized scripts in browsers. 6. User awareness: Train CRM users to recognize suspicious links or inputs that could trigger XSS attacks. 7. Logging and monitoring: Enable detailed logging of POST requests to '/clients/save_contact/' and monitor for anomalous input patterns indicative of injection attempts. 8. Segmentation: Limit access to the CRM system to trusted networks and users to reduce exposure. 9. Incident response: Prepare procedures to quickly respond to detected exploitation attempts, including session invalidation and forensic analysis.