PT-2026-26857 · Larrykim · Wp-Chatbot For Messenger

Kazuma Matsumoto · Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-3506

NVD

CVSS v3.1

5.3

Medium

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

The WP-Chatbot for Messenger plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.9. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the site's MobileMonkey API token and company ID options, which can be used to hijack chatbot configuration and redirect visitor conversations to an attacker-controlled MobileMonkey account.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-3506

Affected Products

Wp-Chatbot For Messenger

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2026-3506 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/32cce973-bc3b-45f1-ad4d-ff395d3a6c8e?source=cve · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/trunk/inc/MobileMonkeyApi.php#L37 · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L52 · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L409 · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L37 · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/inc/class-ht-cc.php#L178 · Note
• https://twitter.com/VulmonFeeds/status/2035294628136566979 · Twitter Post
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/admin/admin.php#L29 · Note
• https://plugins.trac.wordpress.org/browser/wp-chatbot/tags/4.9/admin/class-htcc-admin.php#L29 · Note
• https://twitter.com/CVEnew/status/2035237296598040849 · Twitter Post