Description

WordPress Plugin Live Chat with Facebook Messenger is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Live Chat with Facebook Messenger version 1.4.4 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 1.4.5 or latest

References

https://www.pluginvulnerabilities.com/2019/05/16/this-persistent-cross-site-scripting-xss-vulnerability-seems-likely-to-be-what-hackers-would-be-interested-in-fb-messenger-live-chat-for/

Related Vulnerabilities

WebLogic CVE-2021-2064 Vulnerability (CVE-2021-2064)

Moodle Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2016-9187)

SharePoint CVE-2025-21400 Vulnerability (CVE-2025-21400)

WordPress Plugin User Login History Multiple Cross-Site Scripting Vulnerabilities (1.5.2)

WordPress Plugin SP Project & Document Manager Unspecified Vulnerability (2.5.7.3)

Severity

High

Classification

CWE-79 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update XSS