CVE-2011-1579
MEDIUM · CVSS 5.8EPSS 1.9%EU EUVD
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.
Key facts
- CVSS score
- 5.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:N- Weakness (CWE)
- CWE-20
- EPSS score
- 1.9% (80th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-1580)
- Published
- April 27, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-1580 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
- mediawiki / mediawiki
and 85 more…
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html(Vendor Advisory)
- http://openwall.com/lists/oss-security/2011/04/13/15
- http://secunia.com/advisories/44142(Vendor Advisory)
- http://www.debian.org/security/2011/dsa-2366
- http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856(Exploit, Patch)
- http://www.securityfocus.com/bid/47354
- http://www.vupen.com/english/advisories/2011/0978(Patch, Vendor Advisory)
- http://www.vupen.com/english/advisories/2011/1100
- http://www.vupen.com/english/advisories/2011/1151
- https://bugzilla.redhat.com/show_bug.cgi?id=695577
- https://bugzilla.redhat.com/show_bug.cgi?id=696360
- https://bugzilla.wikimedia.org/show_bug.cgi?id=28450
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66738
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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