InstantCMS vulnerable to Server-Side Request Forgery via package installer

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.

SQL injection vulnerability in InstantSoft InstantCMS 1.10.3 and earlier allows remote attackers to execute arbitrary SQL commands via the orderby parameter to catalog/[id].

InstantCMS Open Redirect vulnerability

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.

Cross-site Scripting (XSS) - Reflected in instantsoft/icms2

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

SQL Injection in instantsoft/icms2

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

Cross-site Scripting (XSS) - Stored in instantsoft/icms2

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