CVE-2026-2893 identifies a SQL Injection vulnerability in the 'Page and Post Clone' WordPress plugin developed by carlosfazenda, present in all versions up to and including 6.3. The vulnerability stems from improper neutralization of special elements in SQL commands (CWE-89) specifically via the 'meta_key' parameter within the content_clone() function. The plugin fails to properly escape or prepare the user-supplied 'meta_key' value, allowing an authenticated attacker with Contributor-level or higher privileges to inject additional SQL queries. This injection is second-order, meaning the malicious payload is stored as a post meta key and only executed later when the post cloning operation occurs. This design flaw enables attackers to append arbitrary SQL commands to existing queries, potentially extracting sensitive information from the WordPress database. The vulnerability requires no user interaction but does require authenticated access with limited privileges, making it more accessible than vulnerabilities requiring administrator rights. The CVSS v3.1 score is 6.5 (medium severity), reflecting network attack vector, low attack complexity, privileges required, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability. No public exploits are known at this time, but the vulnerability poses a significant risk to sites using this plugin, especially those with multiple contributors. The lack of a patch link indicates a fix may not yet be available, emphasizing the need for mitigation.

This vulnerability primarily impacts the confidentiality of data stored within WordPress databases using the vulnerable plugin. An attacker with Contributor-level access can exploit the SQL Injection to extract sensitive information such as user data, credentials, or other confidential content stored in the database. While the integrity and availability of the system are not directly affected, the exposure of sensitive data can lead to further attacks, including privilege escalation or targeted phishing. Organizations relying on the Page and Post Clone plugin for content management are at risk of data breaches, especially if they allow multiple contributors or have sensitive data stored in post meta fields. The ease of exploitation by authenticated users with relatively low privileges increases the threat surface. This can undermine trust in the affected websites and lead to compliance violations if personal or regulated data is exposed. The absence of known exploits in the wild currently limits immediate widespread impact but does not reduce the urgency for remediation.

1. Immediately restrict Contributor-level and higher user permissions to trusted personnel only until a patch is available. 2. Monitor and audit user activities related to post cloning and meta key modifications to detect suspicious behavior. 3. Implement Web Application Firewall (WAF) rules to detect and block SQL Injection patterns targeting the 'meta_key' parameter. 4. Disable or remove the Page and Post Clone plugin if it is not essential to reduce the attack surface. 5. Regularly back up WordPress databases and files to enable recovery in case of compromise. 6. Follow the plugin vendor’s updates closely and apply patches as soon as they are released. 7. Consider employing database query logging and anomaly detection to identify unusual query patterns indicative of exploitation attempts. 8. Educate contributors about the risks of injecting untrusted data into meta fields and enforce input validation at the application level where possible.