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    <link>https://vulnerability.circl.lu</link>
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      <title>fkie_cve-2026-15947</title>
      <link>https://vulnerability.circl.lu/vuln/fkie_cve-2026-15947</link>
      <description>&lt;p&gt;The Metasync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_instant_indexing_settings() function in versions up to, and including, 2.6.23. This function is registered on the admin_init hook and only checks for the presence of $_POST[&amp;#39;submit&amp;#39;] before writing attacker-supplied $_POST[&amp;#39;metasync_post_types&amp;#39;] into the site-wide &amp;#39;metasync_options_instant_indexing&amp;#39; option via update_option(); no current_user_can()/current_user_has_plugin_access() check and no nonce verification are performed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the site&amp;#39;s Google Instant Indexing post-type configuration, controlling which post types are auto-submitted to Google&amp;#39;s Instant Indexing service.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;The Metasync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_instant_indexing_settings() function in versions up to, and including, 2.6.23. This function is registered on the admin_init hook and only checks for the presence of $_POST[&amp;#39;submit&amp;#39;] before writing attacker-supplied $_POST[&amp;#39;metasync_post_types&amp;#39;] into the site-wide &amp;#39;metasync_options_instant_indexing&amp;#39; option via update_option(); no current_user_can()/current_user_has_plugin_access() check and no nonce verification are performed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the site&amp;#39;s Google Instant Indexing post-type configuration, controlling which post types are auto-submitted to Google&amp;#39;s Instant Indexing service.&lt;/p&gt;</content:encoded>
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      <title>GHSA-vpqr-9v4h-mgff</title>
      <link>https://vulnerability.circl.lu/vuln/ghsa-vpqr-9v4h-mgff</link>
      <description>&lt;p&gt;The Metasync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_instant_indexing_settings() function in versions up to, and including, 2.6.23. This function is registered on the admin_init hook and only checks for the presence of $_POST[&amp;#39;submit&amp;#39;] before writing attacker-supplied $_POST[&amp;#39;metasync_post_types&amp;#39;] into the site-wide &amp;#39;metasync_options_instant_indexing&amp;#39; option via update_option(); no current_user_can()/current_user_has_plugin_access() check and no nonce verification are performed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the site&amp;#39;s Google Instant Indexing post-type configuration, controlling which post types are auto-submitted to Google&amp;#39;s Instant Indexing service.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;The Metasync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_instant_indexing_settings() function in versions up to, and including, 2.6.23. This function is registered on the admin_init hook and only checks for the presence of $_POST[&amp;#39;submit&amp;#39;] before writing attacker-supplied $_POST[&amp;#39;metasync_post_types&amp;#39;] into the site-wide &amp;#39;metasync_options_instant_indexing&amp;#39; option via update_option(); no current_user_can()/current_user_has_plugin_access() check and no nonce verification are performed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the site&amp;#39;s Google Instant Indexing post-type configuration, controlling which post types are auto-submitted to Google&amp;#39;s Instant Indexing service.&lt;/p&gt;</content:encoded>
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