Description
includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of "." (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.
Remediation
References
Related Vulnerabilities
Oracle Application Server CVE-2006-0291 Vulnerability (CVE-2006-0291)
WordPress Plugin CigiCigi Post Guest Cross-Site Scripting (1.0.5)
MediaWiki Improper Input Validation Vulnerability (CVE-2011-1580)
WordPress 4.4.x Multiple Vulnerabilities (4.4 - 4.4.30)
Grafana Improper Authentication Vulnerability (CVE-2022-32276)