Siena CMS 'err' Parameter Cross Site Scripting Vulnerability

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

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 launch other attacks.

Siena CMS 1.242 is vulnerable; other versions may also be affected.


 

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