The Contact Form 7 – Dynamic Text Extension plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.0.5. This is due to insufficient output escaping on form shortcode keys displayed in the admin "Scan Forms for Post Meta and User Data Keys" page. This makes it possible for authenticated attackers, with Editor-level access and above, to inject arbitrary web scripts that execute when an Administrator runs the scan feature.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://plugins.trac.wordpress.org/browser/contact-form-7-dynamic-text-extensio…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/contact-form-7-dynamic-text-extensio…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?new=3561908%40contact-form-7-dynam…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/759add85-3d72-46d5-a9…
security@wordfence.com