CVE-2025-29094 is a Cross Site Scripting (XSS) vulnerability identified in the Motivian Content Management System (CMS) version 41.0.0. This vulnerability affects multiple components within the CMS, specifically the Marketing/Forms, Marketing/Offers, and Content/Pages modules. XSS vulnerabilities occur when an application includes untrusted data in a web page without proper validation or escaping, allowing attackers to inject malicious scripts that execute in the context of the victim's browser. In this case, a remote attacker can exploit the vulnerability without requiring any privileges (no authentication needed) by crafting malicious input that is processed by the vulnerable components. The CVSS v3.1 base score is 6.1, indicating a medium severity level. The vector string (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) shows that the attack can be launched remotely over the network with low attack complexity, no privileges required, but requires user interaction (such as a victim clicking a malicious link). The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. The impact affects confidentiality and integrity to a low degree, with no impact on availability. Although no known exploits are currently in the wild, the vulnerability poses a risk of session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the user. The lack of available patches or vendor information increases the urgency for organizations to implement mitigations. The CWE-79 classification confirms this is a classic reflected or stored XSS issue. Given the affected components are related to marketing and content pages, these are likely publicly accessible or user-facing, increasing the attack surface and risk of exploitation.

For European organizations using Motivian CMS version 41.0.0, this vulnerability could lead to unauthorized script execution in users' browsers, potentially compromising user sessions, stealing cookies or credentials, and enabling phishing or social engineering attacks. This can damage the organization's reputation, lead to data breaches involving personal data protected under GDPR, and cause loss of customer trust. Since the affected components are marketing and content-related, attackers could manipulate offers or forms to redirect users to malicious sites or harvest sensitive data. The confidentiality and integrity of user interactions with the CMS are at risk, though availability is not directly impacted. Organizations in sectors with high regulatory scrutiny such as finance, healthcare, and e-commerce in Europe would be particularly sensitive to such breaches. Additionally, the cross-site scripting could be leveraged as a foothold for further attacks within the organization's network if internal users are targeted. The medium CVSS score reflects a moderate but non-negligible risk, especially given the public-facing nature of the vulnerable components.

Since no official patches or vendor guidance are currently available, European organizations should implement immediate compensating controls. These include: 1) Applying strict input validation and output encoding on all user-supplied data in the Marketing/Forms, Marketing/Offers, and Content/Pages components to neutralize malicious scripts. 2) Employing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 3) Conducting thorough code reviews and penetration testing focused on XSS vectors within the affected CMS modules. 4) Restricting access to marketing and content management interfaces to trusted internal networks or VPNs to reduce exposure. 5) Educating users and administrators about the risks of clicking untrusted links and recognizing phishing attempts. 6) Monitoring web traffic and logs for suspicious activity indicative of XSS exploitation attempts. 7) Preparing an incident response plan to quickly address any detected exploitation. Organizations should also engage with the CMS vendor or community to obtain or request timely patches and updates. Finally, consider isolating or temporarily disabling vulnerable components if feasible until a fix is available.