Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the All-in-One WP Migration and Backup plugin for WordPress. It occurs due to insufficient input sanitization and output escaping in the Import feature, allowing authenticated attackers with administrator-level access to inject arbitrary web scripts. These scripts execute whenever a user accesses the injected page. It affects multi-site installations and installations where unfiltered_html is disabled, and is present in all versions up to and including 7.97.

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Impact Analysis

The vulnerability allows an attacker with administrator-level access to inject malicious scripts that execute in the context of users visiting the affected pages. This can lead to unauthorized actions, data theft, or session hijacking for users accessing those pages. Since it requires administrator-level access and affects multi-site or restricted HTML installations, the impact is limited but can compromise the integrity and security of the affected WordPress sites.

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Mitigation Strategies

To mitigate this vulnerability, immediately update the All-in-One WP Migration and Backup plugin to a version later than 7.97 where the issue is fixed. Additionally, restrict administrator-level access to trusted users only, and review multi-site installations and configurations where unfiltered_html is disabled to limit exposure.

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