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.

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.

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.

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.

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.

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.

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 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/anonymous_data.php or (2) plugins/InnovationPlugin.php, which reveals the installation path in an error message.

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.

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.

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.

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

GetSimple CMS 3.3.14 has XSS via the admin/edit.php "Add New Page" field.

There is XSS in GetSimple CMS 3.4.0.9 via the admin/edit.php title field.

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.

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 validate_safe_file in admin/inc/security_functions.php.

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 validate_safe_file in admin/inc/security_functions.php.

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.

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.

An issue was discovered in GetSimple CMS through 3.3.15. insufficient input sanitation in the theme-edit.php file allows upload of files with arbitrary content (PHP code, for example). This vulnerability is triggered by an authenticated user; however, authentication can be bypassed. According to the official documentation for installation step 10, an admin is required to upload all the files, including the .htaccess files, and run a health check. However, what is overlooked is that the Apache HTTP Server by default no longer enables the AllowOverride directive, leading to data/users/admin.xml password exposure. The passwords are hashed but this can be bypassed by starting with the data/other/authorization.xml API key. This allows one to target the session state, since they decided to roll their own implementation. The cookie_name is crafted information that can be leaked from the frontend (site name and version). If a someone leaks the API key and the admin username, then they can bypass authentication. To do so, they need to supply a cookie based on an SHA-1 computation of this known information. The vulnerability exists in the admin/theme-edit.php file. This file checks for forms submissions via POST requests, and for the csrf nonce. If the nonce sent is correct, then the file provided by the user is uploaded. There is a path traversal allowing write access outside the jailed themes directory root. Exploiting the traversal is not necessary because the .htaccess file is ignored. A contributing factor is that there isn't another check on the extension before saving the file, with the assumption that the parameter content is safe. This allows the creation of web accessible and executable files with arbitrary content.

GetSimple CMS v3.3.15 has Persistent Cross-Site Scripting (XSS) in admin/theme-edit.php.

GetSimpleCMS-3.3.15 is affected by directory traversal. Remote attackers are able to delete arbitrary files via /GetSimpleCMS-3.3.15/admin/log.php

Cross Site Scripting (XSS) vulnerability in GetSimpleCMS <= 3.3.15 in admin/changedata.php via the redirect_url parameter and the headers_sent function.

Cross Site Scriptiong (XSS) vulnerability in GetSimpleCMS <=3.3.15 via the timezone parameter to settings.php.

Cross Site Scripting vulnerability in GetSimpleCMS <=3.3.15 via the (1) sitename, (2) username, and (3) email parameters to /admin/setup.php

GetSimpleCMS <=3.3.15 has an open redirect in admin/changedata.php via the redirect function to the url parameter.

Cross Site Scripting (XSS) vulnerability in GetSimpleCMS 3.4.0a in admin/edit.php.

Cross Site Scripting vulnerability in GetSimpleCMS 3.4.0a in admin/snippets.php via (1) Add Snippet and (2) Save snippets.

A stored cross site scripting (XSS) vulnerability in /admin/snippets.php of GetSimple CMS 3.4.0a allows attackers to execute arbitrary web scripts or HTML via crafted payload in the Edit Snippets module.

A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.

GetSimple CMS 3.3.16 allows in parameter 'permalink' on the Settings page persistent Cross Site Scripting which is executed when you create and open a new page

Remote Code Execution vulnerability in GetSimpleCMS before 3.3.16 in admin/upload.php via phar filess.

Cross Site Scripting vulnerability in GetSimpleCMS 3.3.16 in admin/upload.php by adding comments or jpg and other file header information to the content of xla, pages, and gzip files,

GetSimpleCMS 3.3.16 contains a cross-site Scripting (XSS) vulnerability, where Function TSL does not filter check settings.php Website URL: "siteURL" parameter.

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 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.

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 1.1.2 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.

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.

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

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.

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

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 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.