CVE-2020-36838 json
Facebook Chat Plugin <= 1.5 - Missing Capabilities Check
published 2024-10-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30790
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- facebook Facebook Chat Plugin – Live Chat Plugin for WordPress 1.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L |
Affected products
- facebook Facebook Chat Plugin – Live Chat Plugin for WordPress
Classification
- Weakness
-
- CWE-284 Improper Access Control
- Technology feeds
References
Sources
- CVE List CVE-2020-36838
- NVD CVE-2020-36838
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