CVE-2024-22548 is a Cross Site Scripting (XSS) vulnerability identified in FlyCms version 1.0, specifically affecting the website settings section where the website name is configured. 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 other users' browsers. In this case, the vulnerability allows an attacker with at least low privileges (PR:L) to inject malicious scripts into the website name field, which is then rendered on the system's website settings interface. The CVSS 3.1 base score of 5.4 (medium severity) reflects that the attack vector is network-based (AV:N), requires low attack complexity (AC:L), and low privileges, but does require user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the vulnerable component. The impact affects confidentiality and integrity to a limited extent (C:L/I:L), but does not impact availability (A:N). Although no known exploits are currently reported in the wild, the vulnerability poses a risk of session hijacking, defacement, or redirection attacks if exploited. The lack of vendor or product details and absence of patches indicates that FlyCms 1.0 is likely a niche or less widely known content management system, which may limit the immediate exposure but still requires attention from users of this software. The vulnerability is categorized under CWE-79, a common and well-understood class of web application security issues.

For European organizations using FlyCms 1.0, this vulnerability could lead to unauthorized script execution in the context of legitimate users, potentially compromising user sessions, stealing sensitive information, or manipulating website content. This can damage organizational reputation, lead to data leakage, and facilitate further attacks such as phishing or malware distribution. Given the medium severity and requirement for user interaction, the impact is moderate but could be significant in environments where FlyCms is used for public-facing websites or internal portals with sensitive data. The scope change indicates that the vulnerability could affect other components or users beyond the immediate website settings interface, increasing risk. European organizations with compliance obligations under GDPR must consider the potential data confidentiality impacts and the need for timely remediation to avoid regulatory penalties. Additionally, if attackers leverage this vulnerability to conduct targeted attacks, it could disrupt business operations or erode customer trust.

To mitigate this vulnerability, organizations should first verify if they are using FlyCms 1.0 and assess exposure. Since no official patches are currently available, immediate steps include implementing strict input validation and output encoding on the website name field to prevent script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on affected pages. Limit user privileges to the minimum necessary to reduce the risk of exploitation by low-privileged users. Monitor web application logs for suspicious input patterns or unusual user activity related to the website settings. If possible, isolate the management interface behind VPNs or IP whitelisting to reduce exposure. Regularly review and update web application firewall (WAF) rules to detect and block XSS payloads targeting this vulnerability. Engage with the FlyCms community or vendor for updates or patches and plan for an upgrade once a fix is released. Finally, conduct security awareness training to inform users about the risks of interacting with suspicious links or content that could exploit XSS vulnerabilities.