A stored Cross-Site Scripting (XSS) vulnerability exists in the administration panel of Flatpress CMS before 1.4 via the gallery captions component. An attacker with admin privileges can inject a malicious JavaScript payload into the system, which is then stored persistently.
Cross Site Scripting vulnerability in flatpress CMS Flatpress v1.3 allows a remote attacker to execute arbitrary code via a crafted payload to the file name parameter.
A cross-site scripting (XSS) vulnerability in Flatpress v1.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the email field.