Drupal Heartbeat Module Multiple HTML Injection Vulnerabilities

The Heartbeat module is prone to multiple HTML-injection vulnerabilities because it fails to properly sanitize user-supplied input before using it in dynamically generated content.

Attacker-supplied HTML and script code could run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user. Other attacks are also possible.

Versions prior to Heartbeat 6.x-4.9 are vulnerable.


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