Description

WordPress Plugin Companion Auto Update 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 Companion Auto Update version 2.9.3 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 2.9.4 or latest

References

https://www.pluginvulnerabilities.com/2017/06/01/cross-site-request-forgery-csrfcross-site-scripting-xss-vulnerability-in-companion-auto-update/

http://plugins.svn.wordpress.org/companion-auto-update/trunk/readme.txt

Related Vulnerabilities

WordPress Plugin Revive Old Post-Auto Post to Social Media 'cat' Parameter SQL Injection (3.2.5)

WordPress Plugin Disable Comments Cross-Site Request Forgery (1.0.3)

WordPress Plugin Nextend Google Connect Cross-Site Scripting (1.5.2)

Moodle Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2013-4523)

Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2011-4309)

Severity

High

Classification

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

Tags

Missing Update XSS