An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, and 1.39.x before 1.39.4. BlockLogFormatter.php in BlockLogFormatter allows XSS in the partial blocks feature.
| Software | From | Fixed in |
|---|---|---|
| mediawiki / mediawiki | 1.39.0 | 1.39.4 |
| mediawiki / mediawiki | 1.36.0 | 1.38.7 |
| mediawiki / mediawiki | - | 1.35.11 |