CVE-2026-3506 json
WP-Chatbot for Messenger <= 4.9 - Missing Authorization to Unauthenticated Chatbot Configuration Takeover
published 2026-03-21 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-13998
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | 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
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/32cce973-bc3b-45f1-ad4d-ff395d3a6c8e?source=cve
- plugins.trac.wordpress.org /browser/wp-chatbot/trunk/inc/MobileMonkeyApi.php#L37
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L37
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L52
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/inc/MobileMonkeyApi.php#L409
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/admin/class-htcc-admin.php#L29
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/admin/admin.php#L29
- plugins.trac.wordpress.org /browser/wp-chatbot/tags/4.9/inc/class-ht-cc.php#L178
Sources
- CVE List CVE-2026-3506
- NVD CVE-2026-3506
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.