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Helios Calendar Admin/Index.PHP Cross Site Scripting Vulnerability

Helios Calendar is prone to a cross-site scripting vulnerability because it fails to sufficiently sanitize user-supplied data.

Exploiting this issue allows attackers to execute arbitrary HTML or script code in a user's browser session in the context of an affected site. This may allow the attacker to steal cookie-based authentication credentials and launch other attacks.

This issue affects Helios Calendar 1.2.1 Beta; other versions may also be affected.