CVE-2024-12417 is a code injection vulnerability classified under CWE-94, found in the Simple Link Directory plugin developed by quantumcloud for WordPress. The flaw exists because the plugin improperly controls the generation and execution of code via WordPress shortcodes. Specifically, it allows unauthenticated users to trigger the do_shortcode function with unvalidated input, enabling arbitrary shortcode execution. This can lead to unauthorized code execution within the context of the WordPress site, potentially allowing attackers to manipulate site content, execute malicious scripts, or escalate privileges depending on the shortcodes available. The vulnerability affects all versions of the plugin up to and including 8.4.0. The CVSS 3.1 base score is 6.5 (medium severity), reflecting network exploitable code injection without authentication or user interaction, with limited impact on confidentiality and integrity but no direct impact on availability. No patches or known exploits have been reported at the time of publication. The vulnerability is significant because WordPress is widely used globally, and plugins are common attack vectors. Attackers exploiting this flaw could compromise site integrity or use the site as a pivot point for further attacks.

The primary impact of CVE-2024-12417 is unauthorized code execution on WordPress sites using the Simple Link Directory plugin, which can compromise the confidentiality and integrity of site data. Attackers can inject and execute arbitrary shortcodes, potentially leading to content manipulation, data leakage, or execution of malicious payloads. While availability is not directly affected, the integrity loss can undermine user trust and site functionality. Organizations relying on this plugin risk defacement, data breaches, or use of their infrastructure for further malicious activities such as phishing or malware distribution. The vulnerability's unauthenticated nature increases risk, as attackers do not need credentials or user interaction. This can lead to widespread exploitation if not addressed promptly, especially on sites with sensitive or business-critical information.

1. Immediately restrict access to the Simple Link Directory plugin functionality by limiting permissions or disabling the plugin if feasible until a patch is available. 2. Monitor and audit shortcode usage logs to detect unusual or unauthorized shortcode executions. 3. Implement Web Application Firewall (WAF) rules to block suspicious requests attempting to exploit shortcode execution, focusing on patterns that invoke do_shortcode with untrusted input. 4. Follow quantumcloud and WordPress plugin repositories for official patches or updates and apply them promptly once released. 5. Harden WordPress installations by disabling shortcode execution from untrusted sources or limiting shortcode usage to trusted users only. 6. Educate site administrators about the risks of installing unverified plugins and encourage regular security reviews of installed plugins. 7. Employ security plugins that can detect and block code injection attempts and anomalous shortcode activities.