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Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain non-ASCII characters in CSS, as demonstrated using variations of "expression" containing (1) full width characters or (2) IPA extensions, which are converted and rendered by Internet Explorer.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade mediawikiUpgrade mediawiki-extensions | Jul 30, 2024 | Dec 13, 2013 |
| Mediawiki | — | Upgrade MediaWiki to the latest version | Aug 24, 2017 | Dec 13, 2013 |
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