DISPUTED NOTE: this issue has been disputed by the vendor and third parties. SQL injection vulnerability in Memberlist.php in Simple Machines Forum (SMF) 1.1 rc1 and earlier allows remote attackers to execute arbitrary SQL commands via the start parameter. NOTE: the vendor says that since only one character can be modified, there is no SQL injection. Thus this might be an "invalid SQL syntax error." Multiple followups support the vendor.
DISPUTED QueryString.php in Simple Machines Forum (SMF) 1.0.7 and earlier, and 1.1rc2 and earlier, allows remote attackers to more easily spoof the IP address and evade banning via a modified X-Forwarded-For HTTP header, which is preferred instead of other more reliable sources for the IP address. NOTE: the original researcher claims that the vendor has disputed this issue.
Simple Machines Forum (SMF) 1.1RCx before 1.1RC3, and 1.0.x before 1.0.8, does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to perform directory traversal attacks to read arbitrary local files, lock topics, and possibly have other security impacts. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in Simple Machines Forum.
Unspecified vulnerability in Simple Machines Forum (SMF) 1.1.2 allows remote attackers to execute arbitrary PHP code during (1) creation or (2) editing of a message.
Simple Machines Forum (SMF) 1.1.2 uses a concatenation method with insufficient randomization when creating a WAV file CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated brute-force attack.
DISPUTED Multiple PHP remote file inclusion vulnerabilities in Simple Machines Forum (SMF) 1.1.4 allow remote attackers to execute arbitrary PHP code via a URL in the (1) settings[defaultthemedir] parameter to Sources/Subs-Graphics.php and (2) settings[defaultthemedir] parameter to Sources/Themes.php. NOTE: CVE and multiple third parties dispute this issue because the files contain a protection mechanism against direct request.
Session fixation vulnerability in Simple Machines Forum (SMF) 1.1.2 and earlier allows remote attackers to hijack web sessions by setting the PHPSESSID parameter.
SQL injection vulnerability in Sources/Search.php in Simple Machines Forum (SMF) 1.1.3, when MySQL 5 is used, allows remote attackers to execute arbitrary SQL commands via the userspec parameter in a search2 action to index.php.
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.
Multiple cross-site scripting (XSS) vulnerabilities in index.php in Simple Machines Forum (SMF) 1.1 RC3 allow remote authenticated users to inject arbitrary web script or HTML via the (1) recipient or (2) BCC field when selecting send in a pm action.
DISPUTED Directory traversal vulnerability in index.php in Simple Machines Forum (SMF) 1.1.3 allows remote attackers to include local files via unspecified vectors related to the sourcedir parameter or the actionArray hash. NOTE: CVE and multiple third parties dispute this vulnerability because both sourcedir and actionArray are defined before use.
Simple Machines Forum (SMF) 1-0-5 and earlier supports the use of URLs for avatar images, which allows remote attackers to monitor sensitive information of forum visitors such as IP address and user agent, as demonstrated using a PHP script on a malicious server.
Simple Machines Forum (SMF) 1.1.4 allows remote attackers to read a message in private forums by using the advanced search module with the "show results as messages" option, then searching for possible keywords contained in that message.
Cross-site scripting (XSS) vulnerability in index.php in Simple Machines Forum (SMF) allows remote attackers to inject arbitrary web script or HTML via a base64 encoded params value in the action parameter.
Cross-site scripting (XSS) vulnerability in index.php in Simple Machines Forum (SMF) 1.1 RC2 allows remote attackers to inject arbitrary web script or HTML via the action parameter.
Cross-site scripting (XSS) vulnerability in Sources/Register.php in Simple Machine Forum (SMF) 1.0.6 allows remote attackers to inject arbitrary web script or HTML via the X-Forwarded-For HTTP header field.