High severity · published Oct 16, 2024
CVE-2020-36838
Facebook Chat Plugin <= 1.5 - Missing Capabilities Check
7.4
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FC
Facebook Chat Plugin – Live Chat Plugin for WordPress · facebook
before 1.6 · source: vendor
Affected product
FC
Facebook Chat Plugin – Live Chat Plugin for WordPress
facebook
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36838
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36838
www.wordfence.com
https://www.wordfence.com/blog/2020/08/the-official-facebook-chat-plugin-created-vector-for-social-engineering-attacks/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/36ae4183-5fa7-484c-b858-5df10ae3d3f2?source=cve