| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki | ≥ 1.36.0, < 1.39.6≥ 1.40.0, < 1.40.2< 1.35.14 | 1.39.61.40.21.35.14 |
An issue was discovered in the CheckUser extension in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. XSS can occur via message definitions. e.g., in SpecialCheckUserLog.
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