Auth bypass in Larrykim Wp-Chatbot For Messenger
CVE-2026-3506
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.
Vulnerability class: Broken Access Control
EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Larrykim Wp-chatbot For Messenger — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-3506?
- CVE-2026-3506 is a medium-severity vulnerability in Larrykim Wp-Chatbot For Messenger, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-03-21.
- How severe is CVE-2026-3506?
- Medium severity. CVSS v3 base score is 5.3 out of 10.