CVE-2026-39903

Simple Machines Forum 2.1 prior to 2.1.8 and 3.0 prior to 3.0 Alpha 5 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...

CVE-2026-39903

The CVE concerns Simple Machines Forum (SMF) 2.1 prior to 2.1.8 and 3.0 prior to 3.0 Alpha 5. A single-character operator error in Sources/Actions/AttachmentApprove.php causes the permission check to always pass, enabling an authenticated low-privilege user to approve, reject, or delete any pendi...

EUVD-2026-42941

Simple Machines Forum 2.1 prior to 2.1.8 and 3.0 prior to 3.0 Alpha 5 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...