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WP Responsive Popup + Optin CVE-2026-4131

| EUVD-2026-24672 MEDIUM
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-04-22 Wordfence GHSA-mjqc-rj22-4rf2
6.1
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
Analysis Generated
Apr 22, 2026 - 10:00 vuln.today
EUVD ID Assigned
Apr 22, 2026 - 08:30 euvd
EUVD-2026-24672
Analysis Generated
Apr 22, 2026 - 08:30 vuln.today
CVE Published
Apr 22, 2026 - 07:45 nvd
MEDIUM 6.1

DescriptionNVD

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.

AnalysisAI

WP Responsive Popup + Optin plugin for WordPress versions up to 1.4 is vulnerable to Cross-Site Request Forgery (CSRF) allowing unauthenticated attackers to modify all plugin settings, including the 'wpo_image_url' parameter, by tricking site administrators into clicking a malicious link. The vulnerability exists because the settings form in wpo_admin_page.php lacks WordPress nonce generation and verification functions. …

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CVE-2026-4131 vulnerability details – vuln.today

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