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      <title>CVE-2026-16585 — Better Messages &lt;= 2.15.19 - Authenticated (Administrator+) Arbitrary File Deletion via Path Traversal via 'file' Param…</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-16585</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; wordplus Better Messages – Chat Rooms, Group Chat, Private Messages &amp;amp; AI Chat Bots&lt;/p&gt;
&lt;p&gt;The Better Messages – Chat Rooms, Group Chat, Private Messages &amp;amp; AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; wordplus Better Messages – Chat Rooms, Group Chat, Private Messages &amp;amp; AI Chat Bots&lt;/p&gt;
&lt;p&gt;The Better Messages – Chat Rooms, Group Chat, Private Messages &amp;amp; AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.&lt;/p&gt;</content:encoded>
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