CVE-2026-3645

The Punnel – Landing Page Builder plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.1. The save_config() function, which handles the 'punnel_save_config' AJAX action, lacks any capability check (current_user_can()) and nonce verification. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the plugin's entire configuration including the API key via a POST request to admin-ajax.php. Once the API key is known (because the attacker set it), the attacker can use the plugin's public API endpoint (sniff_requests() at /?punnel_api=1) — which only validates requests by comparing a POST token against the stored api_key — to create, update, or delete arbitrary posts, pages, and products on the site.

• CWE-862

• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L118
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L156
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L179
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L403
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L410
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L118
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L156
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L179
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L403
• https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L410
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b6f54ca4-297f-44e8-8bb3-25cdc52f94ff?source=cve

Published

Mar 21, 2026

Last Modified

Jun 17, 2026

Status

Deferred

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