VULNERABILITY INTELLIGENCE

CVE-2011-1579

CVSS score5.8 MEDIUM
EPSS probability1.92%
CISA KEVNot currently listed
Published2011-04-27
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:N

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references