The Visitor Traffic Real Time Statistics plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via 'X-Real-IP' HTTP Header in all versions up to, and including, 8.16 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires no authentication, no nonce, and no capability — the wp_ajax_nopriv_ahcfree_track_visitor endpoint accepts the forged X-Real-IP header from any unauthenticated HTTP request and stores the entity-encoded payload verbatim in the database.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No 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)
Vulnerable Products
wp-buy:visitor traffic real time statistics
References 7
https://plugins.trac.wordpress.org/browser/visitors-traffic-real-time-statistic…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/visitors-traffic-real-time-statistic…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/visitors-traffic-real-time-statistic…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/visitors-traffic-real-time-statistic…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/visitors-traffic-real-time-statistic…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3722792%40visitors-t…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/5349815d-a9e4-431a-8d…
security@wordfence.com