Executive Summary

CVE-2026-2421 is a vulnerability in the ilGhera Carta Docente for WooCommerce WordPress plugin, affecting all versions up to and including 1.5.0. It is a Path Traversal vulnerability triggered via the 'cert' parameter of the 'wccd-delete-certificate' AJAX action. The root cause is insufficient validation of file paths before deleting files.

This flaw allows authenticated users with Administrator-level access or higher to delete arbitrary files on the server. For example, an attacker could delete critical files like wp-config.php, which can lead to site takeover and remote code execution.

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Impact Analysis

The vulnerability can have severe impacts including unauthorized deletion of important server files by an attacker with administrator privileges.

• Deletion of critical files such as wp-config.php, which contains database credentials and configuration.
• Potential site takeover due to loss or manipulation of essential files.
• Remote code execution, allowing attackers to run arbitrary code on the server.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': "This vulnerability involves an authenticated attacker with Administrator-level access exploiting the 'cert' parameter of the 'wccd-delete-certificate' AJAX action to perform path traversal and delete arbitrary files on the server."}, {'type': 'paragraph', 'content': "Detection can focus on monitoring for suspicious AJAX requests to the 'wccd-delete-certificate' action, especially those containing unusual or unexpected file paths in the 'cert' parameter."}, {'type': 'paragraph', 'content': 'Since the vulnerability requires authenticated Administrator access, reviewing WordPress logs for unusual administrator activity or unexpected certificate deletion attempts is recommended.'}, {'type': 'paragraph', 'content': 'Suggested commands or methods to detect exploitation attempts include:'}, {'type': 'list_item', 'content': 'Check web server access logs for POST requests to admin-ajax.php with the action=wccd-delete-certificate parameter.'}, {'type': 'list_item', 'content': "Use grep or similar tools to search for suspicious 'cert' parameter values that include path traversal patterns (e.g., '../')."}, {'type': 'list_item', 'content': 'Example command to search Apache or Nginx logs for suspicious requests:'}, {'type': 'list_item', 'content': "grep 'action=wccd-delete-certificate' /var/log/apache2/access.log | grep '\\.\\./'"}, {'type': 'list_item', 'content': 'Monitor WordPress audit or activity logs for administrator actions involving certificate deletion.'}, {'type': 'list_item', 'content': 'Check for unexpected deletion or modification of critical files such as wp-config.php on the server.'}] [1, 3]

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Mitigation Strategies

[{'type': 'paragraph', 'content': 'Immediate mitigation steps include:'}, {'type': 'list_item', 'content': 'Update the ilGhera Carta Docente for WooCommerce plugin to a version later than 1.5.0 where the vulnerability is fixed.'}, {'type': 'list_item', 'content': 'Restrict Administrator-level access to trusted users only, as exploitation requires authenticated Administrator privileges.'}, {'type': 'list_item', 'content': "Implement monitoring and alerting for suspicious AJAX requests targeting the 'wccd-delete-certificate' action."}, {'type': 'list_item', 'content': 'Review and harden file permissions on the server to prevent unauthorized file deletions.'}, {'type': 'list_item', 'content': 'If immediate update is not possible, consider disabling or restricting access to the vulnerable AJAX action via firewall rules or plugin configuration.'}, {'type': 'list_item', 'content': 'Regularly back up critical files such as wp-config.php to enable recovery in case of file deletion.'}] [1, 3]

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