Dubelu PHPGuestbook HTML Injection Vulnerability

Dubelu PhpGuestbook is prone to an HTML-injection vulnerability because the application fails to properly sanitize user-supplied input before using it in dynamically generated content.

Attacker-supplied HTML and script code would be executed in the context of the affected website, potentially allowing an attacker to steal cookie-based authentication credentials. An attacker could also exploit this issue to control how the site is rendered to the user; other attacks are also possible.

Version 1.0 is vulnerable. Prior versions may be vulnerable as well.


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