CVE-2023-6526

Summary

CVE-2023-6526 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Meta Box – WordPress Custom Fields Framework plugin. This issue, present in all versions up to 5.9.2, allows authenticated attackers with contributor-level access or higher to inject malicious scripts. The vulnerability stems from insufficient input sanitization and output escaping in handling custom post meta values displayed via the plugin's shortcode. As a result, any user who accesses an injected page will unwittingly execute the attacker's scripts.

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