Description

WordPress Plugin WP-UserOnline is prone to an HTML injection vulnerability because it fails to properly sanitize user-supplied input. Attacker-supplied HTML and script code could be executed in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user; other attacks are also possible. WordPress Plugin WP-UserOnline versions prior to 2.70 are vulnerable.

Remediation

Update to plugin version 2.70 or latest

References

http://www.securityfocus.com/bid/41335/exploit

http://websecurity.com.ua/4177/

http://seclists.org/fulldisclosure/2010/Jul/8

http://secunia.com/advisories/40493/

Related Vulnerabilities

Apache Tomcat Improper Input Validation Vulnerability (CVE-2011-2526)

WordPress Plugin Visitors Online by BestWebSoft Cross-Site Scripting (0.9)

Rukovoditel Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2020-11818)

SharePoint Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2020-0894)

e107 Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2018-16388)

Severity

High

Classification

CWE-79 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update XSS