CVE-2018-10305: Simplemachines Simple Machines Forum

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

The MessageSearch2 function in PersonalMessage.php in Simple Machines Forum (SMF) before 2.0.15 does not properly use the possible_users variable in a query, which might allow attackers to bypass intended access restrictions.

Affected products

• Simplemachines Simple Machines Forum: before 2.0.15 (fixed in 2.0.15)

Published 2018-04-24. Last modified 2026-06-17.