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CVE-2011-1579
The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading…
Medium5.8EPSS 1.9%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Weakness
Affected products
n/a
- affected n/a
References (17)
- FEDORA-2011-5495 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://bugzilla.wikimedia.org/show_bug.cgi?id=28450 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2011-0978 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2011-5807 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 47354 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 44142 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2011-5848 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- ADV-2011-1151 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- mediawiki-css-data-xss(66738) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- DSA-2366 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=696360 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [mediawiki-announce] 20110412 MediaWiki security release 1.16.3 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- ADV-2011-1100 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- FEDORA-2011-5812 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=695577 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20110413 Re: CVE request: mediawiki 1.16.3 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .