CVE-2024-7447 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Interactive Contact Form and Multi Step Form Builder with Drag & Drop Editor – Funnelforms Free WordPress plugin. The issue arises from the 'fnsf_af2_handel_file_upload' function lacking proper capability checks, allowing unauthenticated attackers to upload arbitrary media files to the affected WordPress site. This vulnerability affects all versions up to and including 3.7.3.2. Because the upload function does not verify user permissions, attackers can bypass authentication and authorization controls, potentially uploading malicious files such as web shells or other executable content. The vulnerability does not require any user interaction and can be exploited remotely over the network. Although no exploits have been reported in the wild yet, the flaw presents a significant risk because it enables unauthorized data modification, which can be leveraged for further compromise or defacement. The CVSS v3.1 base score is 5.3, indicating a medium severity level, with attack vector as network, no privileges required, and no user interaction needed. The impact affects integrity but not confidentiality or availability directly. The vulnerability is specific to the Funnelforms Free plugin, a tool used to create interactive contact and multi-step forms with drag-and-drop functionality on WordPress sites.

The primary impact of CVE-2024-7447 is unauthorized modification of website data through arbitrary media uploads. Attackers can upload malicious files such as web shells, backdoors, or defacement content, which can lead to further compromise of the WordPress site and potentially the underlying server. This can result in loss of data integrity, reputational damage, and possible pivoting to other internal systems. Since the vulnerability does not affect confidentiality or availability directly, the risk is mainly related to integrity and potential escalation. Organizations running WordPress sites with this plugin are at risk of unauthorized content injection and persistent compromise. The ease of exploitation (no authentication or user interaction required) increases the likelihood of automated attacks. However, the absence of known exploits in the wild suggests that active exploitation is not widespread yet. The impact is more severe for high-profile or high-traffic websites where defacement or malicious uploads can cause significant damage.

To mitigate CVE-2024-7447, organizations should immediately update the Funnelforms Free plugin to a patched version once available. Until a patch is released, administrators should consider disabling or removing the plugin if it is not essential. Implementing a Web Application Firewall (WAF) with rules to block unauthorized file upload attempts targeting the vulnerable function can reduce risk. Restricting file upload permissions at the server level and monitoring upload directories for suspicious files can help detect exploitation attempts. Additionally, hardening WordPress installations by limiting plugin usage to trusted and actively maintained plugins reduces exposure. Regularly auditing installed plugins for vulnerabilities and applying principle of least privilege to user roles can further reduce attack surface. Monitoring logs for unusual POST requests to the upload handler endpoint can provide early warning of exploitation attempts. Finally, educating site administrators about this vulnerability and encouraging prompt patching is critical.