var-201004-0512
Vulnerability from variot

vBulletin is an open source PHP forum program. The URL parameter submitted to the externalredirect.php page is not correctly filtered back to the user in the Two-Step External Link module used by vBulletin. The remote attacker can request a cross-site scripting attack by submitting malicious parameters, resulting in the user's browser. Execute arbitrary HTML and script code in the session. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may help the attacker steal cookie-based authentication credentials and launch other attacks

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