SimpleMachines vulnerabilities
We track 4 vulnerabilities in SimpleMachines products across 2 products. 4 are rated high or critical, and none are known to be exploited. The most recent was published on August 26, 2026.
Latest SimpleMachines vulnerabilities
- 8.1 High severity
SMF: Incorrect Authorization
Simple Machines Forum (SMF) through 2.1.7, fixed in commit 6f0dc61, contains an authorization state-confusion vulnerability in the profile loader that allows authenticated low-privileged users to gain administrator access by supplying multiple values for the u
- 7.7 High severity
SMF: Server-Side Request Forgery
Simple Machines Forum 2.1 prior to commit b4d23df (fixed in 2.1.8) and 3.0 prior to commit 4bf35cf contains a server-side request forgery vulnerability in the image proxy that allows authenticated attackers to trigger internal HTTP requests by embedding attack
- 7.1 High severity
SMF: Incorrect Authorization
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 regardl
- 7.2 High severity
Simple Machines Forum: Improper Control of Generation of Code
SimpleMachinesForum 2.1.1 and earlier allows remote authenticated administrators to execute arbitrary code by inserting a vulnerable php code because the themes can be modified by an administrator. NOTE: the vendor's position is that administrators are intende