PT-2026-34292 · WordPress · Wp Responsive Popup + Optin

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-4131

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions WP Responsive Popup + Optin versions prior to 1.5

Description The WP Responsive Popup + Optin plugin for WordPress is susceptible to Cross-Site Request Forgery. The settings form on the admin page 'wpo admin page.php' fails to implement nonce generation and verification. This allows unauthenticated attackers to update plugin settings, including the wpo image url parameter, by tricking a site administrator into clicking a malicious link.

Recommendations Update the plugin to a version later than 1.4.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2026-4131

Affected Products

Wp Responsive Popup + Optin

References · 14

• https://nvd.nist.gov/vuln/detail/CVE-2026-4131 · Security Note
• https://twitter.com/CVEnew/status/2047428140176457887 · Twitter Post
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_admin_page.php#L15 · Note
• https://twitter.com/VulmonFeeds/status/2046937949212668299 · Twitter Post
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_admin_page.php#L104 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wp-popup-optin.php#L218 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_admin_page.php#L103 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wp-popup-optin.php#L218 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/0a8a49c4-21e8-447c-94da-8241c7d66c29?source=cve · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_admin_page.php#L104 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_admin_page.php#L43 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/tags/1.4/wpo_admin_page.php#L43 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_admin_page.php#L103 · Note
• https://plugins.trac.wordpress.org/browser/wp-popup-optin/trunk/wpo_admin_page.php#L15 · Note