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SimpleMachines

7 known vulnerabilities.

SimpleMachines at a glance

Last 12 months
3
Critical · all time
0
Exploited · all time
0
Public exploit · all time
1
New vulnerabilities per month · last 12 months
0 1 2 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 2 vulnerabilities August 2026: 1 vulnerability September 2026: 0 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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Products

7 results · Feed

  • High 8.1
    CVE-2026-43621 Public exploit

    Simple Machines Forum < 2.1.7 Authorization Confusion via Profile::load()

    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 …

  • High 7.7

    Simple Machines Forum SSRF via image proxy

    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 attac…

  • High 7.1

    Simple Machines Forum Authorization Bypass via AttachmentApprove.php

    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 regard…

  • Low 3.5

    SimpleMachines SMF ManageNews.php cross site scripting

    A vulnerability was found in SimpleMachines SMF 2.1.4. It has been classified as problematic. This affects an unknown part of the file ManageNews.php. The manipulation of the argument subject/message leads to cross site scripting. It is possible to initiate t…

  • Low 3.5

    SimpleMachines SMF ManageAttachments.php cross site scripting

    A vulnerability was found in SimpleMachines SMF 2.1.4 and classified as problematic. Affected by this issue is some unknown functionality of the file ManageAttachments.php. The manipulation of the argument Notice leads to cross site scripting. The attack may …

  • Medium 4.3

    SimpleMachines SMF User Alert Read Status index.php resource injection

    A vulnerability has been found in SimpleMachines SMF 2.1.4 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /index.php?action=profile;u=2;area=showalerts;do=read of the component User Alert Read Status Hand…

  • Medium 5.4

    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 argumen…