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Vulnerabilities

Simple Machines Forum

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

20CVEs
CVE-2016-5726
Packages.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the themechanges array parameter.
Published 2017-02-09 · Modified
9.8EPSS 0.016
CVE-2018-10305
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.
Published 2018-04-24 · Modified
9.8EPSS 0.012
CVE-2013-7466
Simple Machines Forum (SMF) 2.0.4 allows local file inclusion, with resultant remote code execution, in install.php via ../ directory traversal in the db_type parameter if install.php remains present after installation.
Published 2019-03-07 · Modified
8.8EPSS 0.040
CVE-2016-5727
LogInOut.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via vectors related to variables derived from user input in a foreach loop.
Published 2017-02-09 · Modified
8.8EPSS 0.015
CVE-2013-7468
Simple Machines Forum (SMF) 2.0.4 allows PHP Code Injection via the index.php?action=admin;area=languages;sa=editlang dictionary parameter.
Published 2019-03-07 · Modified
8.1EPSS 0.017
CVE-2013-7235
Simple Machines Forum (SMF) before 1.1.19 and 2.x before 2.0.6 allows remote attackers to impersonate arbitrary users via multiple space characters characters.
Published 2014-04-29 · Modified
7.5EPSS 0.015
CVE-2013-7236
Simple Machines Forum (SMF) 2.0.6, 1.1.19, and earlier allows remote attackers to impersonate arbitrary users via a Unicode homoglyph character in a username.
Published 2014-04-29 · Modified
7.5EPSS 0.015
CVE-2022-26982
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 intended to have the ability to modify themes, and can thus choose any PHP code that they wish to have executed on the server.
Published 2022-04-05 · Modified
7.21 PoCEPSS 0.092
CVE-2009-5068
There is a file disclosure vulnerability in SMF (Simple Machines Forum) affecting versions through v2.0.3. On some configurations a SMF deployment is shared by several "co-admins" that are not trusted beyond the SMF deployment. This vulnerability allows them to read arbitrary files on the filesystem and therefore gain new privileges by reading the settings.php with the database passwords.
Published 2020-01-15 · Modified
7.21 PoCEPSS 0.017
CVE-2019-12490
An issue was discovered in Simple Machines Forum (SMF) before 2.0.16. Reverse tabnabbing can occur because of use of _blank for external links.
Published 2020-01-22 · Modified
6.5EPSS 0.013
CVE-2013-4395
Simple Machines Forum (SMF) through 2.0.5 has XSS
Published 2020-02-12 · Modified
6.1EPSS 0.010
CVE-2013-7467
Simple Machines Forum (SMF) 2.0.4 allows XSS via the index.php?action=pm;sa=settings;save sa parameter.
Published 2019-03-07 · Modified
6.1EPSS 0.008
CVE-2025-2583
SimpleMachines SMF ManageNews.php cross site scripting
Published 2025-03-21 · Modified
6.1EPSS 0.004
CVE-2025-67163
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.
Published 2025-12-18 · Analyzed
6.1EPSS 0.003
CVE-2024-7437
SimpleMachines SMF Delete User index.php resource injection
Published 2024-08-03 · Analyzed
5.5EPSS 0.004
CVE-2025-2582
SimpleMachines SMF ManageAttachments.php cross site scripting
Published 2025-03-21 · Modified
5.4EPSS 0.004
CVE-2024-7438
SimpleMachines SMF User Alert Read Status index.php resource injection
Published 2024-08-03 · Analyzed
5.3EPSS 0.005
CVE-2013-0192
File Disclosure in SMF (SimpleMachines Forum) <= 2.0.3: Forum admin can read files such as the database config.
Published 2020-02-07 · Modified
4.91 PoCEPSS 0.038
CVE-2013-4465
Unrestricted file upload vulnerability in the avatar upload functionality in Simple Machines Forum before 2.0.6 and 2.1 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in an unspecified directory.
Published 2013-10-25 · Modified
4.6EPSS 0.024
CVE-2013-7234
Simple Machines Forum (SMF) before 1.1.19 and 2.x before 2.0.6 allows remote attackers to conduct clickjacking attacks via an X-Frame-Options header.
Published 2014-04-29 · Modified
4.3EPSS 0.012