| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki | = 1.40.0≥ 1.36.0, < 1.39.5 | 1.39.5 |
An issue was discovered in includes/page/Article.php in MediaWiki 1.36.x through 1.39.x before 1.39.5 and 1.40.x before 1.40.1. Deleted revision existence is leaked due to incorrect permissions being checked. This reveals that a given revision ID belonged to the given page title, and its timestamp, both of which are not supposed to be public information.
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