CVE-2024-25418 is a high-severity vulnerability identified in flusity-CMS version 2.33, involving a Cross-Site Request Forgery (CSRF) attack vector through the component located at /core/tools/delete_menu.php. CSRF vulnerabilities allow an attacker to trick an authenticated user into submitting a malicious request unknowingly, leveraging the user's active session to perform unauthorized actions. In this case, the vulnerable endpoint appears to handle menu deletion functionality, which suggests that an attacker could potentially delete critical menu items or configurations within the CMS without proper authorization. The CVSS 3.1 base score of 8.8 reflects the high impact and ease of exploitation: the attack vector is network-based (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R). The vulnerability affects confidentiality, integrity, and availability (C:H/I:H/A:H), indicating that successful exploitation could lead to full compromise of the CMS content and structure, potentially disrupting website operations and exposing sensitive data. No patches or vendor advisories are currently listed, and there are no known exploits in the wild at this time. The CWE-352 classification confirms the nature of the vulnerability as a CSRF issue, which typically arises from missing or inadequate anti-CSRF tokens or validation mechanisms in web applications. Given the CMS context, exploitation could be automated or embedded in phishing campaigns targeting authenticated administrators or editors of affected sites.

For European organizations using flusity-CMS v2.33, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized deletion of menu items or other critical CMS configurations, resulting in website defacement, loss of availability, or exposure of sensitive navigation structures. This could disrupt business operations, damage brand reputation, and potentially lead to data breaches if attackers leverage the compromised CMS to inject malicious content or redirect users to phishing sites. Public sector websites, e-commerce platforms, and media outlets in Europe relying on this CMS are particularly vulnerable due to the potential for service disruption and loss of user trust. Additionally, the high impact on confidentiality, integrity, and availability means that attackers could escalate the attack to further compromise backend systems or extract sensitive information. Given the lack of patches, organizations may face prolonged exposure until mitigations are applied.

Immediate mitigation steps include implementing strict CSRF protections such as validating anti-CSRF tokens on all state-changing requests, especially those involving critical operations like menu deletion. Organizations should audit their flusity-CMS installations to confirm the presence of such protections and consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting /core/tools/delete_menu.php. Restricting access to the vulnerable endpoint by IP whitelisting or requiring multi-factor authentication for administrative actions can reduce risk. Monitoring web server logs for unusual POST requests or repeated access attempts to the delete_menu.php endpoint can help detect exploitation attempts. Until an official patch is released, organizations should consider disabling or restricting the vulnerable functionality if feasible. Regular backups of CMS configurations and content are essential to enable rapid recovery in case of successful exploitation. Finally, user awareness training to recognize phishing attempts that could trigger CSRF attacks is recommended.