The WP Duplicate Page plugin for WordPress, developed by ninjateam, suffers from a Missing Authorization vulnerability (CWE-862) identified as CVE-2025-12481. This vulnerability exists in all versions up to and including 1.7 due to the plugin's failure to properly verify user authorization within the 'saveSettings' function. Specifically, the plugin does not ensure that the user attempting to modify plugin settings has sufficient privileges, allowing authenticated users with Contributor-level access or higher to alter role capabilities. These capabilities govern permissions related to duplicating pages and viewing password-protected posts. By manipulating these settings, an attacker can escalate their privileges beyond intended limits, gaining unauthorized access to sensitive content that should be restricted. The vulnerability is remotely exploitable over the network (AV:N), requires low attack complexity (AC:L), and only requires privileges equivalent to a Contributor role (PR:L). No user interaction is needed (UI:N), and the scope remains unchanged (S:U). The impact primarily affects confidentiality (C:L) without affecting integrity or availability. Although no public exploits have been reported, the vulnerability poses a risk to WordPress sites using this plugin, especially those hosting sensitive or confidential information within password-protected posts. The lack of patch links suggests that a fix may not yet be available, emphasizing the need for immediate mitigation.

This vulnerability allows authenticated users with relatively low privileges (Contributor or higher) to escalate their access by modifying plugin settings that control role capabilities. The primary impact is unauthorized disclosure of sensitive information contained in password-protected posts, which could include confidential business data, personal information, or proprietary content. Organizations relying on the WP Duplicate Page plugin risk exposure of sensitive content to unauthorized users, potentially leading to data breaches, loss of customer trust, and regulatory compliance violations. Since WordPress powers a significant portion of websites globally, including many business and governmental sites, the scope of impact is broad. However, the requirement for authenticated access limits exploitation to insiders or users with some level of trust, such as contributors or editors. The vulnerability does not affect site integrity or availability but compromises confidentiality, which can have serious reputational and legal consequences.

1. Immediately restrict Contributor-level and above user permissions to trusted individuals only, minimizing the risk of exploitation. 2. Monitor and audit user roles and capabilities regularly to detect unauthorized changes, especially those related to the WP Duplicate Page plugin. 3. Disable or uninstall the WP Duplicate Page plugin if it is not essential to reduce the attack surface. 4. If disabling is not feasible, implement a Web Application Firewall (WAF) rule to block unauthorized POST requests to the 'saveSettings' function or related plugin endpoints. 5. Apply principle of least privilege by reviewing and tightening WordPress user roles and capabilities across the site. 6. Stay informed about updates from ninjateam and apply patches promptly once available. 7. Consider using alternative plugins with better security track records for duplicating pages. 8. Conduct regular security assessments and penetration testing focused on WordPress plugins and user privilege escalation vectors.