Copy & Delete Posts Plugin AJAX Handler Post Deletion and Settings Overwrite

Compliance Impact

The vulnerability in the Copy & Delete Posts plugin allows unauthorized users with plugin-enabled non-admin roles to delete posts or overwrite plugin settings by bypassing capability checks. This unauthorized access and potential data manipulation could lead to non-compliance with standards and regulations that require strict access controls and data integrity, such as GDPR and HIPAA.

Although the plugin itself is described as GDPR-compliant, the presence of this privilege escalation vulnerability undermines the enforcement of access controls, which are critical for maintaining compliance with data protection regulations.

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Executive Summary

This vulnerability exists in the Copy & Delete Posts plugin version 1.5.4 and earlier. It allows any user with a plugin-enabled non-admin role to invoke all operations in the cdp_action_handling AJAX handler. Specifically, attackers with such roles can delete posts or overwrite plugin settings by exploiting the 'f' parameter, effectively bypassing the intended per-function capability checks.

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Impact Analysis

The vulnerability can lead to unauthorized deletion of posts and modification of plugin settings by users who should not have such privileges. This can result in data loss, disruption of website content, and potential compromise of site functionality due to altered plugin configurations.

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Mitigation Strategies

To mitigate the CVE-2026-53738 vulnerability, you should immediately update the Copy & Delete Posts WordPress plugin to a version later than 1.5.4 where this issue is fixed.

Additionally, restrict plugin-enabled non-admin user roles from accessing or invoking the cdp_action_handling AJAX handler until the update is applied.

Review and adjust user role permissions to ensure that only trusted users have plugin capabilities that could be exploited.

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