Ruby on Rails 'sanitize_css()' Method CVE-2013-1855 Cross Site Scripting Vulnerability
Ruby on Rails is prone to a cross-site scripting vulnerability because it fails to sufficiently sanitize user-supplied input.
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 allow the attacker to steal cookie-based authentication credentials and to launch other attacks.
The vulnerability is fixed in the following versions:
Ruby on Rails 2.3.18, 3.1.12, and 3.2.13.