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Vulnerability record · CVE-2013-7236 · published 29 April 2014

CVE-2013-7236: Simplemachines simple machines forum improper input validation vulnerability

Simplemachines · Simple Machines Forum

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.

7.5 CVSS 2.0 High EPSS 1.5% · top 26.3% CWE-20 · Improper input validation
7.5CVSS 2.0 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2013/Dec/83
http://www.jakoblell.com/blog/2013/12/13/multiple-vulnerabilities-in-smf-forum-software/
http://www.openwall.com/lists/oss-security/2013/12/30/1
http://www.openwall.com/lists/oss-security/2013/12/30/3
http://seclists.org/fulldisclosure/2013/Dec/83
http://www.jakoblell.com/blog/2013/12/13/multiple-vulnerabilities-in-smf-forum-software/
http://www.openwall.com/lists/oss-security/2013/12/30/1
http://www.openwall.com/lists/oss-security/2013/12/30/3

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-10305Simplemachines simple machines forum vulnerabilityThe MessageSearch2 function in PersonalMessage.php in Simple Machines Forum (SMF) before 2.0.15 does not properly use the possible_users variable in …EPSS 1.2%9.8CVE-2016-5726Simplemachines simple machines forum code injection vulnerabilityPackages.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via th…EPSS 1.6%8.8CVE-2013-7466Simplemachines simple machines forum path traversal vulnerabilitySimple Machines Forum (SMF) 2.0.4 allows local file inclusion, with resultant remote code execution, in install.php via ../ directory traversal in th…EPSS 4.0%8.8CVE-2016-5727Simplemachines simple machines forum code injection vulnerabilityLogInOut.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via ve…EPSS 1.5%8.1CVE-2013-7468Simplemachines simple machines forum code injection vulnerabilitySimple Machines Forum (SMF) 2.0.4 allows PHP Code Injection via the index.php?action=admin;area=languages;sa=editlang dictionary parameter.EPSS 1.7%7.5CVE-2013-7235Simplemachines simple machines forum improper input validation vulnerabilitySimple 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 c…EPSS 1.5%7.2CVE-2022-26982Simplemachines simple machines forum code injection vulnerabilitySimpleMachinesForum 2.1.1 and earlier allows remote authenticated administrators to execute arbitrary code by inserting a vulnerable php code because…EPSS 9.2%7.2CVE-2009-5068Simplemachines simple machines forum cleartext storage of sensitive data vulnerabilityThere is a file disclosure vulnerability in SMF (Simple Machines Forum) affecting versions through v2.0.3. On some configurations a SMF deployment is…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2013-7236), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.