CVE-2020-36838

7.4 highEPSS 0.4%

High (7.4). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.4 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2024-10-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

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

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