CVE-2024-32391 identifies a Cross Site Scripting (XSS) vulnerability in MacCMS version 10, specifically build 2024.1000.3000. XSS vulnerabilities arise when an application fails to properly sanitize user-supplied input, allowing attackers to inject malicious scripts that execute in the context of other users' browsers. In this case, a remote attacker with limited privileges can craft a payload that, when processed by the vulnerable MacCMS instance, executes arbitrary code. The vulnerability requires user interaction, such as clicking a malicious link or viewing a crafted page, to trigger the exploit. The CVSS 3.1 score of 7.3 reflects high severity, with a network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L) and user interaction (UI:R). The impact affects confidentiality and integrity (C:H/I:H) but not availability (A:N). The vulnerability is categorized under CWE-79, indicating improper neutralization of input during web page generation. No patches or known exploits have been reported yet, but the risk remains significant due to the potential for arbitrary code execution, which could lead to data theft, session hijacking, or further system compromise. MacCMS is a content management system often used for media and video content delivery, making it a valuable target for attackers seeking to compromise media platforms or inject malicious content to end users.

The exploitation of CVE-2024-32391 could lead to significant confidentiality and integrity breaches within organizations using MacCMS v10. Attackers could execute arbitrary scripts to steal sensitive user data, hijack user sessions, or manipulate content served by the CMS. This could result in unauthorized access to protected media content, leakage of user credentials, or distribution of malware to end users. Although availability is not directly impacted, the reputational damage and potential regulatory consequences from data breaches could be severe. Organizations relying on MacCMS for content delivery, especially those handling sensitive or proprietary media, face risks of intellectual property theft and customer trust erosion. The requirement for user interaction and limited privileges reduces the ease of exploitation but does not eliminate the threat, especially in environments where users may be tricked into interacting with malicious content. The absence of known exploits in the wild currently provides a window for proactive mitigation before widespread attacks occur.

Organizations should immediately review their use of MacCMS v10 and monitor for updates or patches from the vendor addressing CVE-2024-32391. In the absence of official patches, implement strict input validation and output encoding on all user-supplied data within the CMS to prevent script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Limit user privileges to the minimum necessary to reduce the impact of potential exploitation. Conduct security awareness training to educate users about the risks of interacting with suspicious links or content. Regularly audit and monitor web application logs for unusual activities indicative of attempted XSS attacks. Consider deploying Web Application Firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting MacCMS. Finally, establish an incident response plan to quickly address any detected exploitation attempts.