A remote PHP code execution vulnerability exists in InstantCMS version 1.6 and earlier due to unsafe use of eval() within the search view handler. Specifically, user-supplied input passed via the look parameter is concatenated into a PHP expression and executed without proper sanitation. A remote attacker can exploit this flaw by sending a crafted HTTP GET request with a base64-encoded payload in the Cmd header, resulting in arbitrary PHP code execution within the context of the web server.

InstantCMS 2.10.1 has /redirect?url= XSS.

Cross-site Scripting (XSS) - Stored in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

SQL Injection in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Cross-site Scripting (XSS) - Reflected in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Unverified Password Change in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Session Fixation in GitHub repository instantsoft/icms2 prior to 2.16.1.

Improper Access Control in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Server-Side Request Forgery (SSRF) in GitHub repository instantsoft/icms2 prior to 2.16.1.

Cross-site Scripting (XSS) - Stored in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Cross-site Scripting (XSS) - Stored in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Sensitive Cookie in HTTPS Session Without 'Secure' Attribute in GitHub repository instantsoft/icms2 prior to 2.16.1.

Cross-site Scripting (XSS) - Reflected in GitHub repository instantsoft/icms2 prior to 2.16.1.

External Control of System or Configuration Setting in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Server-Side Request Forgery (SSRF) in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Cross-site Scripting (XSS) - Stored in GitHub repository instantsoft/icms2 prior to 2.16.1.-git.

SQL Injection in GitHub repository instantsoft/icms2 prior to 2.16.1.

InstantCMS is a free and open source content management system. A SQL injection vulnerability affects instantcms v2.16.2 in which an attacker with administrative privileges can cause the application to execute unauthorized SQL code. The vulnerability exists in index_chart_data action, which receives an input from user and passes it unsanitized to the core model `filterFunc` function that further embeds this data in an SQL statement. This allows attackers to inject unwanted SQL code into the statement. The `period` should be escaped before inserting it in the query. As of time of publication, a patched version is not available.

InstantCMS is a free and open source content management system. An open redirect was found in the ICMS2 application version 2.16.2 when being redirected after modifying one's own user profile. An attacker could trick a victim into visiting their web application, thinking they are still present on the ICMS2 application. They could then host a website stating "To update your profile, please enter your password," upon which the user may type their password and send it to the attacker. As of time of publication, a patched version is not available.

InstantCMS is a free and open source content management system. In photo upload function in the photo album page there is no input validation taking place. Due to this attackers are able to inject the XSS (Cross Site Scripting) payload and execute. This vulnerability is fixed in 2.16.3.

InstantCMS is a free and open source content management system. A blind Server-Side Request Forgery (SSRF) vulnerability in InstantCMS up to and including 2.17.3 allows authenticated remote attackers to make nay HTTP/HTTPS request via the package parameter. It is possible to make any HTTP/HTTPS request to any website in installer functionality. Due to such vulnerability it is possible to for example scan local network, call local services and its functions, conduct a DoS attack, and/or disclose a server's real IP if it's behind a reverse proxy. It is also possible to exhaust server resources by sending plethora of such requests. As of time of publication, no patched releases are available.

InstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers grant moderator privileges to users, execute scheduled tasks, move posts to trash, and accept friend requests on behalf of the user. This vulnerability is fixed in 2.18.1.