GetSimple CMS My SMTP Contact Plugin 1.1.2 contains a PHP code injection vulnerability. An authenticated administrator can inject arbitrary PHP code through plugin configuration parameters, leading to remote code execution on the server.

GetSimple CMS v3.3.16 was discovered to contain a remote code execution (RCE) vulnerability via the editedfile parameter in admin/theme-edit.php.

Cross-site scripting (XSS) vulnerability in admin/template/js/uploadify/uploadify.swf in GetSimple CMS 3.3.13 allows remote attackers to inject arbitrary web script or HTML, as demonstrated by the movieName parameter.

Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS 3.1.2 and 3.2.3 allow remote attackers to inject arbitrary web script or HTML via the (1) post-menu field to edit.php or (2) Display name field to settings.php. NOTE: The Custom Permalink Structure and Email Address fields are already covered by CVE-2012-6621.

GetSimple CMS My SMTP Contact Plugin 1.1.2 suffers from a Stored Cross-Site Scripting (XSS) vulnerability. The plugin attempts to sanitize user input using htmlspecialchars(), but this can be bypassed by passing dangerous characters as escaped hex bytes. This allows attackers to inject arbitrary client-side code that executes in the administrator's browser when visiting a malicious page.

Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS 3.3.1 allow remote attackers to inject arbitrary web script or HTML via the (1) param parameter to admin/load.php or (2) user, (3) email, or (4) name parameter in a Save Settings action to admin/settings.php.

GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.

GetSimple CMS My SMTP Contact Plugin 1.1.1 contains a cross-site request forgery (CSRF) vulnerability. Attackers can craft a malicious webpage that, when visited by an authenticated administrator, can change SMTP configuration settings in the plugin. This may allow unauthorized changes but does not directly enable remote code execution.

An authenticated remote code execution vulnerability exists in GetSimpleCMS version 3.2.1. The application’s upload.php endpoint allows authenticated users to upload arbitrary files without proper validation of MIME types or extensions. By uploading a .pht file containing PHP code, an attacker can bypass blacklist-based restrictions and place executable code within the web root. A crafted request using a polyglot or disguised extension allows the attacker to execute the payload by accessing the file directly via the web server. This vulnerability exists due to the use of a blacklist for filtering file types instead of a whitelist.

A Cross Site Scripting (XSS) vulnerability in GetSimple CMS 3.3.16 exists when using Source Code Mode as a backend user to add articles via the /admin/edit.php page.

A vulnerability, which was classified as problematic, has been found in GetSimple CMS. Affected by this issue is the file /admin/edit.php of the Content Module. The manipulation of the argument post-content with an input like <script>alert(1)</script> leads to cross site scripting. The attack may be launched remotely but requires authentication. Expoit details have been disclosed within the advisory.

An issue in GetSimpleCMS v.3.4.0a allows a remote attacker to execute arbitrary code via a crafted payload to the phpinfo().

Cross Site Scripting vulnerability in GetSimpleCMS v.3.4.0a allows a remote attacker to execute arbitrary code via the a crafted payload to the components.php function.

A vulnerability was found in GetSimpleCMS 3.3.16 and classified as problematic. This issue affects some unknown processing of the file /admin/profile.php. The manipulation leads to cross-site request forgery. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validatesafefile in admin/inc/securityfunctions.php.

Cross-site scripting (XSS) vulnerability in admin/filebrowser.php in GetSimple CMS before 3.3.6 allows remote attackers to inject arbitrary web script or HTML via the func parameter.

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but there are several alternative cases in which HTML can be executed, such as a file with no extension or an unrecognized extension (e.g., the test or test.asdf filename), because of admin/upload-uploadify.php, and validatesafefile in admin/inc/securityfunctions.php.

Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS before 3.3.6 allow remote attackers to inject arbitrary web script or HTML via the (1) post-content or (2) post-title parameter to admin/edit.php.

A vulnerability was found in GetSimpleCMS 3.3.16/3.4.0a. It has been rated as critical. This issue affects some unknown processing of the file /admin/theme-edit.php. The manipulation leads to code injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-245735.

Cross-site scripting (XSS) vulnerability in admin/components.php in GetSimple CMS 2.01 allows remote attackers to inject arbitrary web script or HTML via the val[] parameter.

Cross-site scripting (XSS) vulnerability in admin/changedata.php in GetSimple CMS 2.01 allows remote attackers to inject arbitrary web script or HTML via the post-title parameter.

Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS 3.1, 3.1.2, 3.2.3, and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) Email Address or (2) Custom Permalink Structure fields in admin/settings.php; (3) path parameter to admin/upload.php; (4) err parameter to admin/theme.php; (5) error parameter to admin/pages.php; or (6) success or (7) err parameter to admin/index.php.

Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS before 3.2.1 allow remote attackers to inject arbitrary web script or HTML via the (1) id parameter to backup-edit.php; (2) title or (3) menu parameter to edit.php; or (4) path or (5) returnid parameter to filebrowser.php in admin/. NOTE: the path parameter in admin/upload.php vector is already covered by CVE-2012-6621.

XML external entity (XXE) vulnerability in admin/api.php in GetSimple CMS 3.1.1 through 3.3.x before 3.3.5 Beta 1, when in certain configurations, allows remote attackers to read arbitrary files via the data parameter.

GetSimple CMS 3.3.4 allows remote attackers to obtain sensitive information via a direct request to (1) data/users/<username>.xml, (2) backups/users/<username>.xml.bak, (3) data/other/authorization.xml, or (4) data/other/appid.xml.

GetSimple CMS 3.3.4 allows remote attackers to obtain sensitive information via a direct request to (1) plugins/anonymousdata.php or (2) plugins/InnovationPlugin.php, which reveals the installation path in an error message.

admin/profile.php in GetSimple CMS 3.x has XSS in a name field.

There is Stored XSS in GetSimple CMS 3.3.12 via the admin/edit.php "post-menu" parameter, a related issue to CVE-2018-16325.

DISPUTED An issue was discovered in GetSimple CMS v3.3.13. There is a CSRF vulnerability that can change the administrator's password via admin/settings.php. NOTE: The vendor reported that the PoC was sending a value for the nonce parameter.

An issue was discovered in GetSimple CMS 3.3.15. An administrator can insert stored XSS via the admin/settings.php Custom Permalink Structure parameter, which injects the XSS payload into any page created at the admin/pages.php URI.