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Opera Web Browser 'javascript:' URI in 'Refresh' Header Cross-Site Scripting Vulnerability

Opera Web Browser is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker can exploit this issue to execute arbitrary script code in the context of the user running the application and to steal cookie-based authentication credentials and other sensitive data that may aid in further attacks.

Opera 9.52 is vulnerable; other versions may also be affected.