Improper authorization control for web services In mediawiki
Description
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.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Aliases
1. 2. 3. 4. 5.