CVE-2020-36838

HIGH 7.4

Facebook Chat Plugin <= 1.5 - Missing Capabilities Check

CVSS Score

7.4

EPSS Score

0.0%

EPSS Percentile

0th

The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.

CWE	CWE-284
Vendor	facebook
Product	facebook chat plugin – live chat plugin for wordpress
Published	Oct 16, 2024
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

facebook / Facebook Chat Plugin – Live Chat Plugin for WordPress

0 < 1.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/36ae4183-5fa7-484c-b858-5df10ae3d3f2?source=cve wordfence.com: https://www.wordfence.com/blog/2020/08/the-official-facebook-chat-plugin-created-vector-for-social-engineering-attacks/

Credits

Chloe Chamberland