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

Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2015-5265)

Sqlite Use of Uninitialized Resource Vulnerability (CVE-2015-3414)

Moodle Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2015-5336)

TYPO3 Permissions, Privileges, and Access Controls Vulnerability (CVE-2013-4320)

WordPress Plugin Advanced Custom Fields:Table Field Cross-Site Scripting (1.1.12)

Severity

High

Classification

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 CWE-79