WP-Chatbot for Messenger <= 4.9 - Missing Authorization to Unauthenticated Chatbot Configuration Takeover

Wordfence Intelligence > Vulnerability Database > WP-Chatbot for Messenger <= 4.9 - Missing Authorization to Unauthenticated Chatbot Configuration Takeover

5.3

Missing Authorization

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVE	CVE-2026-3506
CVSS	5.3 (Medium)
Publicly Published	March 20, 2026
Last Updated	March 21, 2026
Researcher	Kazuma Matsumoto - GMO Cybersecurity by IERAE, Inc.

Description

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.

References

Vulnerability Details for WP-Chatbot for Messenger

WP-Chatbot for Messenger

Software Type	Plugin
Software Slug	wp-chatbot (view on wordpress.org)
Patched?	No
Remediation	No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version	<= 4.9

Recent vulnerabilities in WP-Chatbot for Messenger

WP-Chatbot for Messenger <= 4.7 - Missing Authorization

5.4

CVE-2023-32581

May 11, 2023

Researcher: István Márton

#	Title	CVE ID	CVSS	Researchers	Date
1	WP-Chatbot for Messenger <= 4.7 - Missing Authorization	CVE-2023-32581	5.4	István Márton	May 11, 2023

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