Description
The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \2f\2a and \2a\2f hex strings to surround CSS comments.
Remediation
References
Related Vulnerabilities
SharePoint CVE-2022-35823 Vulnerability (CVE-2022-35823)
phpMyAdmin Other Vulnerability (CVE-2005-3665)
Moodle Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2015-0218)
WordPress 4.4.x Cross-Domain Flash Injection Vulnerability (4.4 - 4.4.13)
WordPress Plugin Easy Comment Uploads 'upload.php' Arbitrary File Upload (0.61)