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      <title>CVE-2026-39903 — Simple Machines Forum Authorization Bypass via AttachmentApprove.php</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-39903</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; SimpleMachines SMF&lt;/p&gt;
&lt;p&gt;Simple Machines Forum 2.1 prior to commit 7d048f8 and 3.0 prior to commit a7875e8 contains an authorization bypass vulnerability in Sources/Actions/AttachmentApprove.php where a single-character operator error causes the permission check to always pass regardless of user permissions. An authenticated low-privileged user can approve, reject, or delete any pending attachments on any board without holding the required approve_posts permission, bypass moderation queues for their own uploads, and enumerate and delete other users&amp;#39; pending attachments.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; SimpleMachines SMF&lt;/p&gt;
&lt;p&gt;Simple Machines Forum 2.1 prior to commit 7d048f8 and 3.0 prior to commit a7875e8 contains an authorization bypass vulnerability in Sources/Actions/AttachmentApprove.php where a single-character operator error causes the permission check to always pass regardless of user permissions. An authenticated low-privileged user can approve, reject, or delete any pending attachments on any board without holding the required approve_posts permission, bypass moderation queues for their own uploads, and enumerate and delete other users&amp;#39; pending attachments.&lt;/p&gt;</content:encoded>
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