A cross-site scripting (XSS) vulnerability in ImpressCMS v1.4.5 and before allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the smile_code parameter of the component /editprofile.php.
SQL Injection in ImpressCMS 1.4.3 and earlier allows remote attackers to inject into the code in unintended way, this allows an attacker to read and modify the sensitive information from the database used by the application. If misconfigured, an attacker can even upload a malicious web shell to compromise the entire system.
ImpressCMS before 1.4.3 has Incorrect Access Control because include/findusers.php allows access by unauthenticated attackers (who are, by design, able to have a security token).
Cross-site scripting (XSS) in modules/content/admin/content.php in ImpressCMS profile 1.4.2 allows remote attackers to inject arbitrary web script or HTML parameters through the "Display Name" field.