CVE-2025-4966: WP Online Users Stats <= 1.0.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting via hk_dataset_results Function

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-06 · updated 2026-06-17
Weakness: CWE-352

Description

The WP Online Users Stats plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.0. This is due to missing nonce validation within the hk_dataset_results() function. This makes it possible for unauthenticated attackers to inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

hk1993 WP Online Users Stats: through 1.0.0

References

https://plugins.trac.wordpress.org/browser/wp-online-users-stats/trunk/admin/class-wp-online-users-stats-admin.php#L118
https://wordpress.org/plugins/wp-online-users-stats/#developers
https://www.wordfence.com/threat-intel/vulnerabilities/id/a41226ab-9732-4de2-843b-284c011c9224?source=cve

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