Description
The WP Responsive Popup + Optin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.4. This is due to the settings form on the admin page (wpo_admin_page.php) lacking nonce generation (wp_nonce_field) and verification (wp_verify_nonce/check_admin_referer). This makes it possible for unauthenticated attackers to update all plugin settings including the 'wpo_image_url' parameter via a forged request, granted they can trick a site administrator into performing an action such as clicking a link.
References10
- plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wp-p…
- plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_…
- plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_…
- plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_…
- plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_…
- plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wp-popu…
- plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_adm…
- plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_adm…
- plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_adm…
- plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_adm…
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 8 · as of 13 November 2026
- CWE
- CWE-352
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.