A stored cross-site scripting (XSS) vulnerability in Simple Machines Forum v2.1.6 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Forum Name parameter.

An issue was discovered in Simple Machines Forum (SMF) before release 2.0.17. There is SSRF related to Subs-Package.php and Subs.php because user-supplied data is used directly in curl calls.

Simple Machine Forum (SMF) versions 1.0.4 and earlier have an SQL injection vulnerability that allows remote attackers to inject arbitrary SQL statements.

SimpleMachines SMF Delete User index.php resource injection

A vulnerability, which was classified as critical, was found in SimpleMachines SMF 2.1.4. Affected is an unknown function of the file /index.php?action=profile;u=2;area=showalerts;do=remove of the component Delete User Handler. The manipulation of the argument aid leads to improper control of resource identifiers. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.