CVE-2026-7693 inisev CVE debrief

Who should care

Administrators of WordPress sites using the Backup Migration plugin, especially those with high-risk profiles or sensitive data, should be aware of this vulnerability. The vulnerability allows for arbitrary OS command execution, which can lead to significant security breaches if exploited. These administrators should prioritize patching the plugin to version 2.1.5.2 or later and monitor for suspicious activity related to the plugin. Additionally, restricting access to the plugin's AJAX handlers and implementing compensating controls can help mitigate the risk until patching can be completed. Security teams responsible for vulnerability management and incident response should also be aware of this vulnerability and prepare for potential exploitation attempts in their environments. This includes reviewing logs, enhancing monitoring, and ensuring that affected systems are identified and remediated promptly. Platform operators and security teams should collaborate to ensure that all necessary steps are taken to protect against potential exploitation, including verifying the patch status of the Backup Migration plugin across their environments and conducting thorough security reviews of affected systems. Vulnerability management processes should be updated to include this CVE, and asset inventory should be reviewed to identify all instances of the vulnerable plugin. This will help in prioritizing remediation efforts and minimizing the risk of exploitation. The vulnerability's impact on security posture should be assessed, and appropriate measures should be taken to mitigate the risk effectively. This includes considering the implementation of additional security controls, such as web application firewalls (WAFs) or intrusion detection systems (IDS), to detect and prevent exploitation attempts. By taking proactive steps to address this vulnerability, organizations can reduce the risk of security breaches and protect their systems from potential exploitation. The vulnerability's severity and potential impact on an organization's security posture necessitate prompt action to mitigate the risk effectively. This includes ensuring that all affected systems are patched or,

Technical summary

The Backup Migration plugin for WordPress is vulnerable to OS Command Injection due to insufficient sanitization of the `file` POST parameter in the `restoreBackup()` AJAX handler. This allows authenticated attackers with Administrator-level access to execute arbitrary OS commands as the web-server user. The vulnerability arises from the plugin's application of `esc_attr()` — which does not strip shell metacharacters — and its concatenation into a command passed to `exec()` without proper quoting. This issue is a critical vulnerability that can bypass WordPress hardening constants such as `DISALLOW_FILE_EDIT` and `DISALLOW_FILE_MODS`, which would otherwise prevent code execution from the admin UI.

Defensive priority

High priority due to high CVSS score and potential for arbitrary OS command execution.

Recommended defensive actions

• Apply the latest patch (2.1.5.2 or later) to the Backup Migration plugin.
• Restrict access to the plugin's AJAX handlers to prevent unauthorized use.
• Monitor for suspicious activity related to the plugin.
• Review logs for signs of potential exploitation attempts.
• Verify the patch status of the Backup Migration plugin across all environments.
• Implement additional security controls, such as web application firewalls (WAFs) or intrusion detection systems (IDS), to detect and prevent exploitation attempts.
• Conduct a thorough security review of affected systems to identify potential vulnerabilities.

Evidence notes

The Backup Migration plugin for WordPress has a vulnerability in all versions up to and including 2.1.5.1. Evidence from the NVD and Wordfence indicates that the plugin does not properly sanitize user input, allowing for OS command injection. The vulnerability exists in the `restoreBackup()` AJAX handler due to insufficient sanitization of the `file` POST parameter. This allows authenticated attackers with Administrator-level access to execute arbitrary OS commands as the web-server user. The plugin's use of `esc_attr()` — an HTML-context sanitizer that does not strip shell metacharacters — and concatenation of the result, unquoted, into a `php-cli -f … bmi_restore <file> <remote>` command passed to `exec()` enables the exploitation. Defenders should verify the patch status of the Backup Migration plugin, review logs for suspicious activity related to the plugin, and consider restricting access to the plugin's AJAX handlers to prevent unauthorized use.

Official resources