CVE-2024-12341 is a vulnerability classified under CWE-862 (Missing Authorization) affecting all versions up to and including 1.0 of the Custom Skins Contact Form 7 plugin for WordPress, developed by mahendrapatidarmp. The root cause is the absence of a capability check in the 'cf7cs_action_callback' function, which handles certain plugin actions. This flaw allows any authenticated user with at least Subscriber-level privileges to bypass intended authorization controls and perform unauthorized modifications, including updating the content of any post and creating new skins within the plugin. The vulnerability is exploitable remotely over the network without requiring user interaction, and no elevated privileges beyond Subscriber are necessary. The CVSS v3.1 base score is 4.3, reflecting a medium severity primarily due to the limited impact on confidentiality and availability but a notable impact on integrity. No patches or fixes have been linked yet, and no known exploits have been observed in the wild. The vulnerability could be leveraged by attackers who have gained low-level access to a WordPress site to escalate their influence by altering site content or plugin skins, potentially facilitating further attacks or defacement.

The primary impact of CVE-2024-12341 is unauthorized modification of website content and plugin skins, which compromises the integrity of affected WordPress sites. Attackers with Subscriber-level access can alter posts and create new skins, potentially leading to misinformation, defacement, or embedding malicious content. While confidentiality and availability are not directly affected, the integrity breach can undermine user trust and damage organizational reputation. For organizations relying on this plugin, especially those with multiple users having Subscriber or higher roles, the risk of internal misuse or exploitation by compromised accounts is significant. This vulnerability could also serve as a foothold for further attacks, such as privilege escalation or persistent backdoors, if combined with other weaknesses. The lack of known exploits reduces immediate risk, but the ease of exploitation and widespread use of WordPress make it a relevant threat to many websites globally.

To mitigate CVE-2024-12341, organizations should immediately restrict Subscriber-level user capabilities to the minimum necessary, ensuring that untrusted users cannot authenticate or gain Subscriber roles. Administrators should monitor user roles and audit recent post modifications for unauthorized changes. Until an official patch is released, consider disabling or removing the Custom Skins Contact Form 7 plugin if it is not essential. For sites that must keep the plugin, implement Web Application Firewall (WAF) rules to detect and block suspicious requests targeting the 'cf7cs_action_callback' function. Additionally, apply strict access controls on the WordPress admin area, including multi-factor authentication for all users with elevated privileges. Regularly update WordPress core and plugins to the latest versions once a patch is available. Finally, maintain comprehensive backups to restore content integrity if unauthorized changes occur.