CVE-2024-23094 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability identified in Flusity-CMS version 2.33, specifically within the component located at /cover/addons/info_media_gallery/action/edit_addon_post.php. CSRF vulnerabilities allow an attacker to trick an authenticated user into submitting a forged HTTP request, which the vulnerable application processes as legitimate. In this case, the vulnerability enables an attacker to perform unauthorized actions on behalf of the user without their consent or knowledge. The CVSS 3.1 base score of 8.8 reflects the critical nature of this flaw, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The impact is substantial, affecting confidentiality, integrity, and availability (C:H/I:H/A:H), indicating that successful exploitation could lead to complete compromise of the affected CMS instance. The vulnerability does not require authentication, making it accessible to unauthenticated remote attackers who can lure users into triggering malicious requests. Although no known exploits are reported in the wild yet, the presence of this vulnerability in a CMS platform that manages media gallery addons suggests potential for attackers to manipulate content, inject malicious code, or disrupt service availability. The lack of vendor or product information beyond the CMS name and version limits precise attribution but does not diminish the risk posed by this vulnerability. The CWE-352 classification confirms the nature of the issue as a CSRF attack vector, which typically arises from inadequate validation of request origins or missing anti-CSRF tokens in state-changing requests.

For European organizations using Flusity-CMS v2.33, this vulnerability poses a significant risk to web application security. Exploitation could lead to unauthorized modification or deletion of media gallery content, injection of malicious scripts, or disruption of CMS functionality, potentially impacting website integrity and availability. This can result in data breaches, defacement, or service outages, damaging organizational reputation and customer trust. Given the CMS’s role in content management, compromised systems could serve as vectors for further attacks such as phishing or malware distribution. The fact that no authentication is required to exploit this vulnerability increases the attack surface, making it easier for threat actors to target European entities, especially those with public-facing CMS instances. The high confidentiality impact suggests sensitive data managed or displayed via the CMS could be exposed or manipulated. Organizations in sectors like media, education, government, and e-commerce that rely on Flusity-CMS for content delivery are particularly vulnerable. Additionally, the timing of the disclosure in early 2024 means that unpatched systems remain at risk, emphasizing the urgency for mitigation.

1. Immediate implementation of CSRF protections: Organizations should verify and enforce the presence of anti-CSRF tokens in all state-changing requests within Flusity-CMS, particularly in the /cover/addons/info_media_gallery/action/edit_addon_post.php component. 2. Apply patches or updates: Although no patch links are provided, organizations should monitor official Flusity-CMS channels for security updates or patches addressing this vulnerability and apply them promptly. 3. Web Application Firewall (WAF) deployment: Configure WAF rules to detect and block suspicious requests that lack valid CSRF tokens or originate from untrusted sources. 4. User awareness and training: Educate users about the risks of clicking on unsolicited links or performing actions while logged into the CMS to reduce the likelihood of CSRF exploitation. 5. Restrict access: Limit administrative or content editing privileges to trusted networks or VPNs to reduce exposure. 6. Implement Content Security Policy (CSP): Deploy CSP headers to mitigate the impact of potential script injections resulting from CSRF exploitation. 7. Regular security audits: Conduct periodic code reviews and penetration testing focusing on CSRF and other web vulnerabilities within the CMS environment. These measures, combined, will reduce the risk of exploitation and limit potential damage.